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Finding the Fourth Proportional to 122,654.40, 183,981.60 and 75,998.40

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Solution

The fourth proportional to 122,654.40, 183,981.60 and 75,998.40 is: 113,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,654.40 : 183,981.60 = 75,998.40 : x
  2. Step 2: Convert to fraction form
    122,654.40/183,981.60 = 75,998.40/x
  3. Step 3: Cross multiply
    122,654.40x = 183,981.60 × 75,998.40
  4. Step 4: Simplify right side
    122,654.40x = 13,982,307,229.44
  5. Step 5: Solve for x
    x = 13,982,307,229.44/122,654.40
  6. Step 6: Final answer
    x = 113,997.60

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Similar ratio
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1.5x scale

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.