Home / 122,799,997.35-169,540,475.45-78,171,150.56

Finding the Fourth Proportional to 122,799,997.35, 169,540,475.45 and 78,171,150.56

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Solution

The fourth proportional to 122,799,997.35, 169,540,475.45 and 78,171,150.56 is: 107,924,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,799,997.35 : 169,540,475.45 = 78,171,150.56 : x
  2. Step 2: Convert to fraction form
    122,799,997.35/169,540,475.45 = 78,171,150.56/x
  3. Step 3: Cross multiply
    122,799,997.35x = 169,540,475.45 × 78,171,150.56
  4. Step 4: Simplify right side
    122,799,997.35x = 13,253,174,031,177,376
  5. Step 5: Solve for x
    x = 13,253,174,031,177,376/122,799,997.35
  6. Step 6: Final answer
    x = 107,924,872.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.