Finding the Fourth Proportional to 138,527,315.10, 207,653,920.65 and 65,615,942.70
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Solution
The fourth proportional to 138,527,315.10, 207,653,920.65 and 65,615,942.70 is: 98,358,996.92
Step by Step Solution
- Step 1: Write the proportion equation
138,527,315.10 : 207,653,920.65 = 65,615,942.70 : x - Step 2: Convert to fraction form
138,527,315.10/207,653,920.65 = 65,615,942.70/x - Step 3: Cross multiply
138,527,315.10x = 207,653,920.65 × 65,615,942.70 - Step 4: Simplify right side
138,527,315.10x = 13,625,407,758,800,748 - Step 5: Solve for x
x = 13,625,407,758,800,748/138,527,315.10 - Step 6: Final answer
x = 98,358,996.92
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.