Home / 145,427.20-218,067.90-66,452.20

Finding the Fourth Proportional to 145,427.20, 218,067.90 and 66,452.20

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Solution

The fourth proportional to 145,427.20, 218,067.90 and 66,452.20 is: 99,644.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,427.20 : 218,067.90 = 66,452.20 : x
  2. Step 2: Convert to fraction form
    145,427.20/218,067.90 = 66,452.20/x
  3. Step 3: Cross multiply
    145,427.20x = 218,067.90 × 66,452.20
  4. Step 4: Simplify right side
    145,427.20x = 14,491,091,704.38
  5. Step 5: Solve for x
    x = 14,491,091,704.38/145,427.20
  6. Step 6: Final answer
    x = 99,644.99

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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.