Home / 122,799,944.45-169,540,402.50-78,171,097.76

Finding the Fourth Proportional to 122,799,944.45, 169,540,402.50 and 78,171,097.76

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Solution

The fourth proportional to 122,799,944.45, 169,540,402.50 and 78,171,097.76 is: 107,924,799.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,799,944.45 : 169,540,402.50 = 78,171,097.76 : x
  2. Step 2: Convert to fraction form
    122,799,944.45/169,540,402.50 = 78,171,097.76/x
  3. Step 3: Cross multiply
    122,799,944.45x = 169,540,402.50 × 78,171,097.76
  4. Step 4: Simplify right side
    122,799,944.45x = 13,253,159,377,706,394
  5. Step 5: Solve for x
    x = 13,253,159,377,706,394/122,799,944.45
  6. Step 6: Final answer
    x = 107,924,799.45

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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.