Home / 159,685.28-239,458.68-84,789.20

Finding the Fourth Proportional to 159,685.28, 239,458.68 and 84,789.20

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Solution

The fourth proportional to 159,685.28, 239,458.68 and 84,789.20 is: 127,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,685.28 : 239,458.68 = 84,789.20 : x
  2. Step 2: Convert to fraction form
    159,685.28/239,458.68 = 84,789.20/x
  3. Step 3: Cross multiply
    159,685.28x = 239,458.68 × 84,789.20
  4. Step 4: Simplify right side
    159,685.28x = 20,303,509,910.26
  5. Step 5: Solve for x
    x = 20,303,509,910.26/159,685.28
  6. Step 6: Final answer
    x = 127,147.04

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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.