Home / 90,769.12-136,168.26-38,193.64

Finding the Fourth Proportional to 90,769.12, 136,168.26 and 38,193.64

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Solution

The fourth proportional to 90,769.12, 136,168.26 and 38,193.64 is: 57,296.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,769.12 : 136,168.26 = 38,193.64 : x
  2. Step 2: Convert to fraction form
    90,769.12/136,168.26 = 38,193.64/x
  3. Step 3: Cross multiply
    90,769.12x = 136,168.26 × 38,193.64
  4. Step 4: Simplify right side
    90,769.12x = 5,200,761,501.87
  5. Step 5: Solve for x
    x = 5,200,761,501.87/90,769.12
  6. Step 6: Final answer
    x = 57,296.59

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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.