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Finding the Fourth Proportional to 100,672.43, 151,125.30 and 54,016.43

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Solution

The fourth proportional to 100,672.43, 151,125.30 and 54,016.43 is: 81,087.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,672.43 : 151,125.30 = 54,016.43 : x
  2. Step 2: Convert to fraction form
    100,672.43/151,125.30 = 54,016.43/x
  3. Step 3: Cross multiply
    100,672.43x = 151,125.30 × 54,016.43
  4. Step 4: Simplify right side
    100,672.43x = 8,163,249,188.68
  5. Step 5: Solve for x
    x = 8,163,249,188.68/100,672.43
  6. Step 6: Final answer
    x = 81,087.24

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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.