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Finding the Fourth Proportional to 159,221.68, 219,601.52 and 98,758.42

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Solution

The fourth proportional to 159,221.68, 219,601.52 and 98,758.42 is: 136,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,221.68 : 219,601.52 = 98,758.42 : x
  2. Step 2: Convert to fraction form
    159,221.68/219,601.52 = 98,758.42/x
  3. Step 3: Cross multiply
    159,221.68x = 219,601.52 × 98,758.42
  4. Step 4: Simplify right side
    159,221.68x = 21,687,499,144.80
  5. Step 5: Solve for x
    x = 21,687,499,144.80/159,221.68
  6. Step 6: Final answer
    x = 136,209.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.