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Finding the Third Proportional to 78,776,938 and 126,572,613

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Solution

The third proportional to 78,776,938 and 126,572,613 is: 203,366,959.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,776,938 : 126,572,613 = 126,572,613 : x
  2. Step 2: Convert to fraction form
    78,776,938/126,572,613 = 126,572,613/x
  3. Step 3: Cross multiply
    78,776,938x = 126,572,613 × 126,572,613
  4. Step 4: Simplify right side
    78,776,938x = 16,020,626,361,647,768
  5. Step 5: Solve for x
    x = 16,020,626,361,647,768/78,776,938
  6. Step 6: Final answer
    x = 203,366,959.52

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.