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Finding the Fourth Proportional to 126,311.61, 174,311.45 and 69,722.97

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Solution

The fourth proportional to 126,311.61, 174,311.45 and 69,722.97 is: 96,218.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,311.61 : 174,311.45 = 69,722.97 : x
  2. Step 2: Convert to fraction form
    126,311.61/174,311.45 = 69,722.97/x
  3. Step 3: Cross multiply
    126,311.61x = 174,311.45 × 69,722.97
  4. Step 4: Simplify right side
    126,311.61x = 12,153,511,999.01
  5. Step 5: Solve for x
    x = 12,153,511,999.01/126,311.61
  6. Step 6: Final answer
    x = 96,218.49

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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.