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Finding the Fourth Proportional to 136,187.52, 204,281.28 and 42,700.80

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Solution

The fourth proportional to 136,187.52, 204,281.28 and 42,700.80 is: 64,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,187.52 : 204,281.28 = 42,700.80 : x
  2. Step 2: Convert to fraction form
    136,187.52/204,281.28 = 42,700.80/x
  3. Step 3: Cross multiply
    136,187.52x = 204,281.28 × 42,700.80
  4. Step 4: Simplify right side
    136,187.52x = 8,722,974,081.02
  5. Step 5: Solve for x
    x = 8,722,974,081.02/136,187.52
  6. Step 6: Final answer
    x = 64,051.20

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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.