Home / 156,748.65-235,025.78-90,155.85

Finding the Fourth Proportional to 156,748.65, 235,025.78 and 90,155.85

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Solution

The fourth proportional to 156,748.65, 235,025.78 and 90,155.85 is: 135,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,748.65 : 235,025.78 = 90,155.85 : x
  2. Step 2: Convert to fraction form
    156,748.65/235,025.78 = 90,155.85/x
  3. Step 3: Cross multiply
    156,748.65x = 235,025.78 × 90,155.85
  4. Step 4: Simplify right side
    156,748.65x = 21,188,948,517.03
  5. Step 5: Solve for x
    x = 21,188,948,517.03/156,748.65
  6. Step 6: Final answer
    x = 135,177.87

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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.