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Finding the Fourth Proportional to 159,171.99, 219,652.71 and 87,552

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Solution

The fourth proportional to 159,171.99, 219,652.71 and 87,552 is: 120,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,171.99 : 219,652.71 = 87,552 : x
  2. Step 2: Convert to fraction form
    159,171.99/219,652.71 = 87,552/x
  3. Step 3: Cross multiply
    159,171.99x = 219,652.71 × 87,552
  4. Step 4: Simplify right side
    159,171.99x = 19,231,034,065.92
  5. Step 5: Solve for x
    x = 19,231,034,065.92/159,171.99
  6. Step 6: Final answer
    x = 120,819.21

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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.