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Finding the Fourth Proportional to 159,811.60, 239,343.64 and 126,306.80

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Solution

The fourth proportional to 159,811.60, 239,343.64 and 126,306.80 is: 189,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,811.60 : 239,343.64 = 126,306.80 : x
  2. Step 2: Convert to fraction form
    159,811.60/239,343.64 = 126,306.80/x
  3. Step 3: Cross multiply
    159,811.60x = 239,343.64 × 126,306.80
  4. Step 4: Simplify right side
    159,811.60x = 30,230,729,268.75
  5. Step 5: Solve for x
    x = 30,230,729,268.75/159,811.60
  6. Step 6: Final answer
    x = 189,164.80

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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.