Home / 135,789.52-203,684.28-72,417.65

Finding the Fourth Proportional to 135,789.52, 203,684.28 and 72,417.65

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Solution

The fourth proportional to 135,789.52, 203,684.28 and 72,417.65 is: 108,626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,789.52 : 203,684.28 = 72,417.65 : x
  2. Step 2: Convert to fraction form
    135,789.52/203,684.28 = 72,417.65/x
  3. Step 3: Cross multiply
    135,789.52x = 203,684.28 × 72,417.65
  4. Step 4: Simplify right side
    135,789.52x = 14,750,336,899.54
  5. Step 5: Solve for x
    x = 14,750,336,899.54/135,789.52
  6. Step 6: Final answer
    x = 108,626.48

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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.