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Finding the Fourth Proportional to 159,209.04, 219,712.44 and 87,591

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Solution

The fourth proportional to 159,209.04, 219,712.44 and 87,591 is: 120,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,209.04 : 219,712.44 = 87,591 : x
  2. Step 2: Convert to fraction form
    159,209.04/219,712.44 = 87,591/x
  3. Step 3: Cross multiply
    159,209.04x = 219,712.44 × 87,591
  4. Step 4: Simplify right side
    159,209.04x = 19,244,832,332.04
  5. Step 5: Solve for x
    x = 19,244,832,332.04/159,209.04
  6. Step 6: Final answer
    x = 120,877.76

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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.