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Finding the Fourth Proportional to 101,528.64, 152,179.68 and 42,344.64

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Solution

The fourth proportional to 101,528.64, 152,179.68 and 42,344.64 is: 63,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,528.64 : 152,179.68 = 42,344.64 : x
  2. Step 2: Convert to fraction form
    101,528.64/152,179.68 = 42,344.64/x
  3. Step 3: Cross multiply
    101,528.64x = 152,179.68 × 42,344.64
  4. Step 4: Simplify right side
    101,528.64x = 6,443,993,764.92
  5. Step 5: Solve for x
    x = 6,443,993,764.92/101,528.64
  6. Step 6: Final answer
    x = 63,469.71

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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.