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Finding the Fourth Proportional to 126,686.84, 174,800.08 and 75,691.92

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Solution

The fourth proportional to 126,686.84, 174,800.08 and 75,691.92 is: 104,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,686.84 : 174,800.08 = 75,691.92 : x
  2. Step 2: Convert to fraction form
    126,686.84/174,800.08 = 75,691.92/x
  3. Step 3: Cross multiply
    126,686.84x = 174,800.08 × 75,691.92
  4. Step 4: Simplify right side
    126,686.84x = 13,230,953,671.35
  5. Step 5: Solve for x
    x = 13,230,953,671.35/126,686.84
  6. Step 6: Final answer
    x = 104,438.26

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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.