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Finding the Fourth Proportional to 122,366.60, 183,616.80 and 47,489.72

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Solution

The fourth proportional to 122,366.60, 183,616.80 and 47,489.72 is: 71,260.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,366.60 : 183,616.80 = 47,489.72 : x
  2. Step 2: Convert to fraction form
    122,366.60/183,616.80 = 47,489.72/x
  3. Step 3: Cross multiply
    122,366.60x = 183,616.80 × 47,489.72
  4. Step 4: Simplify right side
    122,366.60x = 8,719,910,419.30
  5. Step 5: Solve for x
    x = 8,719,910,419.30/122,366.60
  6. Step 6: Final answer
    x = 71,260.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.