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Finding the Fourth Proportional to 100,458.40, 150,687.60 and 38,125.60

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Solution

The fourth proportional to 100,458.40, 150,687.60 and 38,125.60 is: 57,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,458.40 : 150,687.60 = 38,125.60 : x
  2. Step 2: Convert to fraction form
    100,458.40/150,687.60 = 38,125.60/x
  3. Step 3: Cross multiply
    100,458.40x = 150,687.60 × 38,125.60
  4. Step 4: Simplify right side
    100,458.40x = 5,745,055,162.56
  5. Step 5: Solve for x
    x = 5,745,055,162.56/100,458.40
  6. Step 6: Final answer
    x = 57,188.40

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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.