Home / 124,287.50-186,286.64-71,016.80

Finding the Fourth Proportional to 124,287.50, 186,286.64 and 71,016.80

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Solution

The fourth proportional to 124,287.50, 186,286.64 and 71,016.80 is: 106,442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,287.50 : 186,286.64 = 71,016.80 : x
  2. Step 2: Convert to fraction form
    124,287.50/186,286.64 = 71,016.80/x
  3. Step 3: Cross multiply
    124,287.50x = 186,286.64 × 71,016.80
  4. Step 4: Simplify right side
    124,287.50x = 13,229,479,769.03
  5. Step 5: Solve for x
    x = 13,229,479,769.03/124,287.50
  6. Step 6: Final answer
    x = 106,442.56

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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.