Finding the Fourth Proportional to 168,438,629.70, 252,657,944.55 and 40,787,813.70
Calculator
Solution
The fourth proportional to 168,438,629.70, 252,657,944.55 and 40,787,813.70 is: 61,181,720.55
Step by Step Solution
- Step 1: Write the proportion equation
168,438,629.70 : 252,657,944.55 = 40,787,813.70 : x - Step 2: Convert to fraction form
168,438,629.70/252,657,944.55 = 40,787,813.70/x - Step 3: Cross multiply
168,438,629.70x = 252,657,944.55 × 40,787,813.70 - Step 4: Simplify right side
168,438,629.70x = 10,305,365,172,130,332 - Step 5: Solve for x
x = 10,305,365,172,130,332/168,438,629.70 - Step 6: Final answer
x = 61,181,720.55
Related Problems
Find fourth proportional to 84,219,314.85, 126,328,972.28 and 20,393,906.85
Half scale
Find fourth proportional to 336,877,259.40, 505,315,889.10 and 81,575,627.40
Double scale
Find fourth proportional to 168,438,630.70, 252,657,946.05 and 40,787,814.70
Similar ratio
Find fourth proportional to 252,657,944.55, 378,986,916.83 and 61,181,720.55
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.