Home / 90,319.26-135,469.17-31,150.38

Finding the Fourth Proportional to 90,319.26, 135,469.17 and 31,150.38

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Solution

The fourth proportional to 90,319.26, 135,469.17 and 31,150.38 is: 46,722.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,319.26 : 135,469.17 = 31,150.38 : x
  2. Step 2: Convert to fraction form
    90,319.26/135,469.17 = 31,150.38/x
  3. Step 3: Cross multiply
    90,319.26x = 135,469.17 × 31,150.38
  4. Step 4: Simplify right side
    90,319.26x = 4,219,916,123.78
  5. Step 5: Solve for x
    x = 4,219,916,123.78/90,319.26
  6. Step 6: Final answer
    x = 46,722.22

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1.5x scale

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.