Home / 120,860.88-181,229-54,243.90

Finding the Fourth Proportional to 120,860.88, 181,229 and 54,243.90

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Solution

The fourth proportional to 120,860.88, 181,229 and 54,243.90 is: 81,337.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,860.88 : 181,229 = 54,243.90 : x
  2. Step 2: Convert to fraction form
    120,860.88/181,229 = 54,243.90/x
  3. Step 3: Cross multiply
    120,860.88x = 181,229 × 54,243.90
  4. Step 4: Simplify right side
    120,860.88x = 9,830,567,753.10
  5. Step 5: Solve for x
    x = 9,830,567,753.10/120,860.88
  6. Step 6: Final answer
    x = 81,337.88

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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.