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Finding the Fourth Proportional to 131,452.80, 197,227.80 and 42,709.20

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Solution

The fourth proportional to 131,452.80, 197,227.80 and 42,709.20 is: 64,079.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,452.80 : 197,227.80 = 42,709.20 : x
  2. Step 2: Convert to fraction form
    131,452.80/197,227.80 = 42,709.20/x
  3. Step 3: Cross multiply
    131,452.80x = 197,227.80 × 42,709.20
  4. Step 4: Simplify right side
    131,452.80x = 8,423,441,555.76
  5. Step 5: Solve for x
    x = 8,423,441,555.76/131,452.80
  6. Step 6: Final answer
    x = 64,079.59

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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.