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Finding the Fourth Proportional to 159,779.52, 239,295.78 and 126,274.68

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Solution

The fourth proportional to 159,779.52, 239,295.78 and 126,274.68 is: 189,116.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,779.52 : 239,295.78 = 126,274.68 : x
  2. Step 2: Convert to fraction form
    159,779.52/239,295.78 = 126,274.68/x
  3. Step 3: Cross multiply
    159,779.52x = 239,295.78 × 126,274.68
  4. Step 4: Simplify right side
    159,779.52x = 30,216,998,044.85
  5. Step 5: Solve for x
    x = 30,216,998,044.85/159,779.52
  6. Step 6: Final answer
    x = 189,116.84

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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.