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Finding the Fourth Proportional to 126,843.46, 175,046.80 and 72,394.53

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Solution

The fourth proportional to 126,843.46, 175,046.80 and 72,394.53 is: 99,906.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,843.46 : 175,046.80 = 72,394.53 : x
  2. Step 2: Convert to fraction form
    126,843.46/175,046.80 = 72,394.53/x
  3. Step 3: Cross multiply
    126,843.46x = 175,046.80 × 72,394.53
  4. Step 4: Simplify right side
    126,843.46x = 12,672,430,814.00
  5. Step 5: Solve for x
    x = 12,672,430,814.00/126,843.46
  6. Step 6: Final answer
    x = 99,906.06

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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.