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Finding the Fourth Proportional to 159,073.71, 219,519.76 and 87,453.11

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Solution

The fourth proportional to 159,073.71, 219,519.76 and 87,453.11 is: 120,684.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,073.71 : 219,519.76 = 87,453.11 : x
  2. Step 2: Convert to fraction form
    159,073.71/219,519.76 = 87,453.11/x
  3. Step 3: Cross multiply
    159,073.71x = 219,519.76 × 87,453.11
  4. Step 4: Simplify right side
    159,073.71x = 19,197,685,472.21
  5. Step 5: Solve for x
    x = 19,197,685,472.21/159,073.71
  6. Step 6: Final answer
    x = 120,684.21

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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.