Finding the Fourth Proportional to 115,639,448.14, 159,618,172.38 and 74,386,340.52
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Solution
The fourth proportional to 115,639,448.14, 159,618,172.38 and 74,386,340.52 is: 102,676,136.17
Step by Step Solution
- Step 1: Write the proportion equation
115,639,448.14 : 159,618,172.38 = 74,386,340.52 : x - Step 2: Convert to fraction form
115,639,448.14/159,618,172.38 = 74,386,340.52/x - Step 3: Cross multiply
115,639,448.14x = 159,618,172.38 × 74,386,340.52 - Step 4: Simplify right side
115,639,448.14x = 11,873,411,723,838,738 - Step 5: Solve for x
x = 11,873,411,723,838,738/115,639,448.14 - Step 6: Final answer
x = 102,676,136.17
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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.