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Finding the Fourth Proportional to 159,103.68, 219,568.08 and 87,488.88

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Solution

The fourth proportional to 159,103.68, 219,568.08 and 87,488.88 is: 120,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,103.68 : 219,568.08 = 87,488.88 : x
  2. Step 2: Convert to fraction form
    159,103.68/219,568.08 = 87,488.88/x
  3. Step 3: Cross multiply
    159,103.68x = 219,568.08 × 87,488.88
  4. Step 4: Simplify right side
    159,103.68x = 19,209,765,402.95
  5. Step 5: Solve for x
    x = 19,209,765,402.95/159,103.68
  6. Step 6: Final answer
    x = 120,737.40

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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.