Finding the Fourth Proportional to 138,238,639.97, 207,356,539.73 and 79,909,203.26
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Solution
The fourth proportional to 138,238,639.97, 207,356,539.73 and 79,909,203.26 is: 119,862,983.92
Step by Step Solution
- Step 1: Write the proportion equation
138,238,639.97 : 207,356,539.73 = 79,909,203.26 : x - Step 2: Convert to fraction form
138,238,639.97/207,356,539.73 = 79,909,203.26/x - Step 3: Cross multiply
138,238,639.97x = 207,356,539.73 × 79,909,203.26 - Step 4: Simplify right side
138,238,639.97x = 16,569,695,879,138,506 - Step 5: Solve for x
x = 16,569,695,879,138,506/138,238,639.97 - Step 6: Final answer
x = 119,862,983.92
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.