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Finding the Fourth Proportional to 100,425.86, 150,638.10 and 25,545.32

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Solution

The fourth proportional to 100,425.86, 150,638.10 and 25,545.32 is: 38,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,425.86 : 150,638.10 = 25,545.32 : x
  2. Step 2: Convert to fraction form
    100,425.86/150,638.10 = 25,545.32/x
  3. Step 3: Cross multiply
    100,425.86x = 150,638.10 × 25,545.32
  4. Step 4: Simplify right side
    100,425.86x = 3,848,098,468.69
  5. Step 5: Solve for x
    x = 3,848,098,468.69/100,425.86
  6. Step 6: Final answer
    x = 38,317.80

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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.