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Finding the Fourth Proportional to 159,686.40, 239,360.96 and 59,780.80

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Solution

The fourth proportional to 159,686.40, 239,360.96 and 59,780.80 is: 89,608.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,686.40 : 239,360.96 = 59,780.80 : x
  2. Step 2: Convert to fraction form
    159,686.40/239,360.96 = 59,780.80/x
  3. Step 3: Cross multiply
    159,686.40x = 239,360.96 × 59,780.80
  4. Step 4: Simplify right side
    159,686.40x = 14,309,189,677.57
  5. Step 5: Solve for x
    x = 14,309,189,677.57/159,686.40
  6. Step 6: Final answer
    x = 89,608.07

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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.