Home / 100,231.64-138,318.10-54,909.24

Finding the Fourth Proportional to 100,231.64, 138,318.10 and 54,909.24

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Solution

The fourth proportional to 100,231.64, 138,318.10 and 54,909.24 is: 75,773.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,231.64 : 138,318.10 = 54,909.24 : x
  2. Step 2: Convert to fraction form
    100,231.64/138,318.10 = 54,909.24/x
  3. Step 3: Cross multiply
    100,231.64x = 138,318.10 × 54,909.24
  4. Step 4: Simplify right side
    100,231.64x = 7,594,941,749.24
  5. Step 5: Solve for x
    x = 7,594,941,749.24/100,231.64
  6. Step 6: Final answer
    x = 75,773.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.