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Finding the Fourth Proportional to 122,608.92, 169,200.18 and 71,656.68

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Solution

The fourth proportional to 122,608.92, 169,200.18 and 71,656.68 is: 98,886.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,608.92 : 169,200.18 = 71,656.68 : x
  2. Step 2: Convert to fraction form
    122,608.92/169,200.18 = 71,656.68/x
  3. Step 3: Cross multiply
    122,608.92x = 169,200.18 × 71,656.68
  4. Step 4: Simplify right side
    122,608.92x = 12,124,323,154.20
  5. Step 5: Solve for x
    x = 12,124,323,154.20/122,608.92
  6. Step 6: Final answer
    x = 98,886.14

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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.