Finding the Fourth Proportional to 138,238,641.33, 207,356,541.76 and 79,909,204.62
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Solution
The fourth proportional to 138,238,641.33, 207,356,541.76 and 79,909,204.62 is: 119,862,985.96
Step by Step Solution
- Step 1: Write the proportion equation
138,238,641.33 : 207,356,541.76 = 79,909,204.62 : x - Step 2: Convert to fraction form
138,238,641.33/207,356,541.76 = 79,909,204.62/x - Step 3: Cross multiply
138,238,641.33x = 207,356,541.76 × 79,909,204.62 - Step 4: Simplify right side
138,238,641.33x = 16,569,696,324,795,416 - Step 5: Solve for x
x = 16,569,696,324,795,416/138,238,641.33 - Step 6: Final answer
x = 119,862,985.96
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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.