Finding the Fourth Proportional to 93,418.80, 128,918.16 and 53,131.68
Calculator
Solution
The fourth proportional to 93,418.80, 128,918.16 and 53,131.68 is: 73,321.84
Step by Step Solution
- Step 1: Write the proportion equation
93,418.80 : 128,918.16 = 53,131.68 : x - Step 2: Convert to fraction form
93,418.80/128,918.16 = 53,131.68/x - Step 3: Cross multiply
93,418.80x = 128,918.16 × 53,131.68 - Step 4: Simplify right side
93,418.80x = 6,849,638,423.31 - Step 5: Solve for x
x = 6,849,638,423.31/93,418.80 - Step 6: Final answer
x = 73,321.84
Related Problems
Find fourth proportional to 46,709.40, 64,459.08 and 26,565.84
Half scale
Find fourth proportional to 186,837.60, 257,836.32 and 106,263.36
Double scale
Find fourth proportional to 93,419.80, 128,919.54 and 53,132.68
Similar ratio
Find fourth proportional to 140,128.20, 193,377.24 and 79,697.52
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.