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Finding the Fourth Proportional to 169,357.44, 254,105.28 and 90,451.20

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Solution

The fourth proportional to 169,357.44, 254,105.28 and 90,451.20 is: 135,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,357.44 : 254,105.28 = 90,451.20 : x
  2. Step 2: Convert to fraction form
    169,357.44/254,105.28 = 90,451.20/x
  3. Step 3: Cross multiply
    169,357.44x = 254,105.28 × 90,451.20
  4. Step 4: Simplify right side
    169,357.44x = 22,984,127,502.34
  5. Step 5: Solve for x
    x = 22,984,127,502.34/169,357.44
  6. Step 6: Final answer
    x = 135,713.72

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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.