Home / 122,799,944.20-169,540,402.15-78,171,097.51

Finding the Fourth Proportional to 122,799,944.20, 169,540,402.15 and 78,171,097.51

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Solution

The fourth proportional to 122,799,944.20, 169,540,402.15 and 78,171,097.51 is: 107,924,799.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,799,944.20 : 169,540,402.15 = 78,171,097.51 : x
  2. Step 2: Convert to fraction form
    122,799,944.20/169,540,402.15 = 78,171,097.51/x
  3. Step 3: Cross multiply
    122,799,944.20x = 169,540,402.15 × 78,171,097.51
  4. Step 4: Simplify right side
    122,799,944.20x = 13,253,159,308,352,266
  5. Step 5: Solve for x
    x = 13,253,159,308,352,266/122,799,944.20
  6. Step 6: Final answer
    x = 107,924,799.11

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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.