Home / 121,049.10-181,530.45-42,165.90

Finding the Fourth Proportional to 121,049.10, 181,530.45 and 42,165.90

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Solution

The fourth proportional to 121,049.10, 181,530.45 and 42,165.90 is: 63,233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,049.10 : 181,530.45 = 42,165.90 : x
  2. Step 2: Convert to fraction form
    121,049.10/181,530.45 = 42,165.90/x
  3. Step 3: Cross multiply
    121,049.10x = 181,530.45 × 42,165.90
  4. Step 4: Simplify right side
    121,049.10x = 7,654,394,801.66
  5. Step 5: Solve for x
    x = 7,654,394,801.66/121,049.10
  6. Step 6: Final answer
    x = 63,233.80

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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.