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Finding the Fourth Proportional to 159,335.48, 219,882.12 and 87,713.66

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Solution

The fourth proportional to 159,335.48, 219,882.12 and 87,713.66 is: 121,044.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,335.48 : 219,882.12 = 87,713.66 : x
  2. Step 2: Convert to fraction form
    159,335.48/219,882.12 = 87,713.66/x
  3. Step 3: Cross multiply
    159,335.48x = 219,882.12 × 87,713.66
  4. Step 4: Simplify right side
    159,335.48x = 19,286,665,513.76
  5. Step 5: Solve for x
    x = 19,286,665,513.76/159,335.48
  6. Step 6: Final answer
    x = 121,044.39

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1.5x scale

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.