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Finding the Fourth Proportional to 126,672.77, 174,805.73 and 69,311.87

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Solution

The fourth proportional to 126,672.77, 174,805.73 and 69,311.87 is: 95,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,672.77 : 174,805.73 = 69,311.87 : x
  2. Step 2: Convert to fraction form
    126,672.77/174,805.73 = 69,311.87/x
  3. Step 3: Cross multiply
    126,672.77x = 174,805.73 × 69,311.87
  4. Step 4: Simplify right side
    126,672.77x = 12,116,111,727.87
  5. Step 5: Solve for x
    x = 12,116,111,727.87/126,672.77
  6. Step 6: Final answer
    x = 95,648.90

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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.