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Finding the Fourth Proportional to 90,134.56, 135,221.15 and 26,959.56

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Solution

The fourth proportional to 90,134.56, 135,221.15 and 26,959.56 is: 40,445.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,134.56 : 135,221.15 = 26,959.56 : x
  2. Step 2: Convert to fraction form
    90,134.56/135,221.15 = 26,959.56/x
  3. Step 3: Cross multiply
    90,134.56x = 135,221.15 × 26,959.56
  4. Step 4: Simplify right side
    90,134.56x = 3,645,502,706.69
  5. Step 5: Solve for x
    x = 3,645,502,706.69/90,134.56
  6. Step 6: Final answer
    x = 40,445.12

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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.