Finding the Fourth Proportional to 100,319,645.49, 138,441,601.14 and 56,268,998.55
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Solution
The fourth proportional to 100,319,645.49, 138,441,601.14 and 56,268,998.55 is: 77,651,493.04
Step by Step Solution
- Step 1: Write the proportion equation
100,319,645.49 : 138,441,601.14 = 56,268,998.55 : x - Step 2: Convert to fraction form
100,319,645.49/138,441,601.14 = 56,268,998.55/x - Step 3: Cross multiply
100,319,645.49x = 138,441,601.14 × 56,268,998.55 - Step 4: Simplify right side
100,319,645.49x = 7,789,970,253,806,337 - Step 5: Solve for x
x = 7,789,970,253,806,337/100,319,645.49 - Step 6: Final answer
x = 77,651,493.04
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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.