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Finding the Fourth Proportional to 172,481.60, 258,722.40 and 83,908.10

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Solution

The fourth proportional to 172,481.60, 258,722.40 and 83,908.10 is: 125,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,481.60 : 258,722.40 = 83,908.10 : x
  2. Step 2: Convert to fraction form
    172,481.60/258,722.40 = 83,908.10/x
  3. Step 3: Cross multiply
    172,481.60x = 258,722.40 × 83,908.10
  4. Step 4: Simplify right side
    172,481.60x = 21,708,905,011.44
  5. Step 5: Solve for x
    x = 21,708,905,011.44/172,481.60
  6. Step 6: Final answer
    x = 125,862.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.