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Finding the Fourth Proportional to 129,797.62, 179,201.79 and 99,524.78

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Solution

The fourth proportional to 129,797.62, 179,201.79 and 99,524.78 is: 137,406.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,797.62 : 179,201.79 = 99,524.78 : x
  2. Step 2: Convert to fraction form
    129,797.62/179,201.79 = 99,524.78/x
  3. Step 3: Cross multiply
    129,797.62x = 179,201.79 × 99,524.78
  4. Step 4: Simplify right side
    129,797.62x = 17,835,017,829.35
  5. Step 5: Solve for x
    x = 17,835,017,829.35/129,797.62
  6. Step 6: Final answer
    x = 137,406.36

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1.5x scale

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.