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Finding the Fourth Proportional to 124,034.80, 186,052.20 and 115,286.80

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Solution

The fourth proportional to 124,034.80, 186,052.20 and 115,286.80 is: 172,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,034.80 : 186,052.20 = 115,286.80 : x
  2. Step 2: Convert to fraction form
    124,034.80/186,052.20 = 115,286.80/x
  3. Step 3: Cross multiply
    124,034.80x = 186,052.20 × 115,286.80
  4. Step 4: Simplify right side
    124,034.80x = 21,449,362,770.96
  5. Step 5: Solve for x
    x = 21,449,362,770.96/124,034.80
  6. Step 6: Final answer
    x = 172,930.20

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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.