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Finding the Fourth Proportional to 131,255.92, 196,903.20 and 42,479.92

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Solution

The fourth proportional to 131,255.92, 196,903.20 and 42,479.92 is: 63,726.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,255.92 : 196,903.20 = 42,479.92 : x
  2. Step 2: Convert to fraction form
    131,255.92/196,903.20 = 42,479.92/x
  3. Step 3: Cross multiply
    131,255.92x = 196,903.20 × 42,479.92
  4. Step 4: Simplify right side
    131,255.92x = 8,364,432,183.74
  5. Step 5: Solve for x
    x = 8,364,432,183.74/131,255.92
  6. Step 6: Final answer
    x = 63,726.13

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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.