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Finding the Fourth Proportional to 129,951.48, 179,334.52 and 76,237.42

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Solution

The fourth proportional to 129,951.48, 179,334.52 and 76,237.42 is: 105,208.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.48 : 179,334.52 = 76,237.42 : x
  2. Step 2: Convert to fraction form
    129,951.48/179,334.52 = 76,237.42/x
  3. Step 3: Cross multiply
    129,951.48x = 179,334.52 × 76,237.42
  4. Step 4: Simplify right side
    129,951.48x = 13,672,001,121.74
  5. Step 5: Solve for x
    x = 13,672,001,121.74/129,951.48
  6. Step 6: Final answer
    x = 105,208.51

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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.