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Finding the Fourth Proportional to 125,283.96, 172,843.68 and 79,963.56

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Solution

The fourth proportional to 125,283.96, 172,843.68 and 79,963.56 is: 110,318.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,283.96 : 172,843.68 = 79,963.56 : x
  2. Step 2: Convert to fraction form
    125,283.96/172,843.68 = 79,963.56/x
  3. Step 3: Cross multiply
    125,283.96x = 172,843.68 × 79,963.56
  4. Step 4: Simplify right side
    125,283.96x = 13,821,195,976.30
  5. Step 5: Solve for x
    x = 13,821,195,976.30/125,283.96
  6. Step 6: Final answer
    x = 110,318.96

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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.