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Finding the Fourth Proportional to 126,658.50, 174,773.54 and 72,960.98

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Solution

The fourth proportional to 126,658.50, 174,773.54 and 72,960.98 is: 100,677.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,658.50 : 174,773.54 = 72,960.98 : x
  2. Step 2: Convert to fraction form
    126,658.50/174,773.54 = 72,960.98/x
  3. Step 3: Cross multiply
    126,658.50x = 174,773.54 × 72,960.98
  4. Step 4: Simplify right side
    126,658.50x = 12,751,647,517.80
  5. Step 5: Solve for x
    x = 12,751,647,517.80/126,658.50
  6. Step 6: Final answer
    x = 100,677.39

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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.