Finding the Fourth Proportional to 130,385,643.60, 195,578,465.40 and 39,497,422.80
Calculator
Solution
The fourth proportional to 130,385,643.60, 195,578,465.40 and 39,497,422.80 is: 59,246,134.20
Step by Step Solution
- Step 1: Write the proportion equation
130,385,643.60 : 195,578,465.40 = 39,497,422.80 : x - Step 2: Convert to fraction form
130,385,643.60/195,578,465.40 = 39,497,422.80/x - Step 3: Cross multiply
130,385,643.60x = 195,578,465.40 × 39,497,422.80 - Step 4: Simplify right side
130,385,643.60x = 7,724,845,338,478,971 - Step 5: Solve for x
x = 7,724,845,338,478,971/130,385,643.60 - Step 6: Final answer
x = 59,246,134.20
Related Problems
Find fourth proportional to 65,192,821.80, 97,789,232.70 and 19,748,711.40
Half scale
Find fourth proportional to 260,771,287.20, 391,156,930.80 and 78,994,845.60
Double scale
Find fourth proportional to 130,385,644.60, 195,578,466.90 and 39,497,423.80
Similar ratio
Find fourth proportional to 195,578,465.40, 293,367,698.10 and 59,246,134.20
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.