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Finding the Fourth Proportional to 159,502.20, 239,447.70 and 80,575.80

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Solution

The fourth proportional to 159,502.20, 239,447.70 and 80,575.80 is: 120,961.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,502.20 : 239,447.70 = 80,575.80 : x
  2. Step 2: Convert to fraction form
    159,502.20/239,447.70 = 80,575.80/x
  3. Step 3: Cross multiply
    159,502.20x = 239,447.70 × 80,575.80
  4. Step 4: Simplify right side
    159,502.20x = 19,293,689,985.66
  5. Step 5: Solve for x
    x = 19,293,689,985.66/159,502.20
  6. Step 6: Final answer
    x = 120,961.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.