Home / 121,605.12-182,435.68-38,499.12

Finding the Fourth Proportional to 121,605.12, 182,435.68 and 38,499.12

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Solution

The fourth proportional to 121,605.12, 182,435.68 and 38,499.12 is: 57,757.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,605.12 : 182,435.68 = 38,499.12 : x
  2. Step 2: Convert to fraction form
    121,605.12/182,435.68 = 38,499.12/x
  3. Step 3: Cross multiply
    121,605.12x = 182,435.68 × 38,499.12
  4. Step 4: Simplify right side
    121,605.12x = 7,023,613,136.60
  5. Step 5: Solve for x
    x = 7,023,613,136.60/121,605.12
  6. Step 6: Final answer
    x = 57,757.54

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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.