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Finding the Third Proportional to 77,393,778 and 111,878,505

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Solution

The third proportional to 77,393,778 and 111,878,505 is: 161,728,761.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,393,778 : 111,878,505 = 111,878,505 : x
  2. Step 2: Convert to fraction form
    77,393,778/111,878,505 = 111,878,505/x
  3. Step 3: Cross multiply
    77,393,778x = 111,878,505 × 111,878,505
  4. Step 4: Simplify right side
    77,393,778x = 12,516,799,881,035,024
  5. Step 5: Solve for x
    x = 12,516,799,881,035,024/77,393,778
  6. Step 6: Final answer
    x = 161,728,761.72

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.