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Finding the Fourth Proportional to 122,560.92, 169,129.56 and 74,894.04

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Solution

The fourth proportional to 122,560.92, 169,129.56 and 74,894.04 is: 103,351.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,560.92 : 169,129.56 = 74,894.04 : x
  2. Step 2: Convert to fraction form
    122,560.92/169,129.56 = 74,894.04/x
  3. Step 3: Cross multiply
    122,560.92x = 169,129.56 × 74,894.04
  4. Step 4: Simplify right side
    122,560.92x = 12,666,796,031.82
  5. Step 5: Solve for x
    x = 12,666,796,031.82/122,560.92
  6. Step 6: Final answer
    x = 103,351.02

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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.