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Finding the Fourth Proportional to 129,262.52, 193,997.46 and 66,950.84

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Solution

The fourth proportional to 129,262.52, 193,997.46 and 66,950.84 is: 100,479.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,262.52 : 193,997.46 = 66,950.84 : x
  2. Step 2: Convert to fraction form
    129,262.52/193,997.46 = 66,950.84/x
  3. Step 3: Cross multiply
    129,262.52x = 193,997.46 × 66,950.84
  4. Step 4: Simplify right side
    129,262.52x = 12,988,292,904.87
  5. Step 5: Solve for x
    x = 12,988,292,904.87/129,262.52
  6. Step 6: Final answer
    x = 100,479.96

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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.