Home / 187,421.20-281,131.80-54,301.55

Finding the Fourth Proportional to 187,421.20, 281,131.80 and 54,301.55

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Solution

The fourth proportional to 187,421.20, 281,131.80 and 54,301.55 is: 81,452.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,421.20 : 281,131.80 = 54,301.55 : x
  2. Step 2: Convert to fraction form
    187,421.20/281,131.80 = 54,301.55/x
  3. Step 3: Cross multiply
    187,421.20x = 281,131.80 × 54,301.55
  4. Step 4: Simplify right side
    187,421.20x = 15,265,890,885.00
  5. Step 5: Solve for x
    x = 15,265,890,885.00/187,421.20
  6. Step 6: Final answer
    x = 81,452.32

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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.