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Finding the Fourth Proportional to 125,262, 172,952.28 and 80,627.76

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Solution

The fourth proportional to 125,262, 172,952.28 and 80,627.76 is: 111,324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,262 : 172,952.28 = 80,627.76 : x
  2. Step 2: Convert to fraction form
    125,262/172,952.28 = 80,627.76/x
  3. Step 3: Cross multiply
    125,262x = 172,952.28 × 80,627.76
  4. Step 4: Simplify right side
    125,262x = 13,944,754,923.29
  5. Step 5: Solve for x
    x = 13,944,754,923.29/125,262
  6. Step 6: Final answer
    x = 111,324.70

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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.