Home / 143,427.42-215,132.85-54,689.88

Finding the Fourth Proportional to 143,427.42, 215,132.85 and 54,689.88

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Solution

The fourth proportional to 143,427.42, 215,132.85 and 54,689.88 is: 82,031.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,427.42 : 215,132.85 = 54,689.88 : x
  2. Step 2: Convert to fraction form
    143,427.42/215,132.85 = 54,689.88/x
  3. Step 3: Cross multiply
    143,427.42x = 215,132.85 × 54,689.88
  4. Step 4: Simplify right side
    143,427.42x = 11,765,589,750.56
  5. Step 5: Solve for x
    x = 11,765,589,750.56/143,427.42
  6. Step 6: Final answer
    x = 82,031.66

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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.