Home / 121,538.70-182,502.45-82,269.90

Finding the Fourth Proportional to 121,538.70, 182,502.45 and 82,269.90

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Solution

The fourth proportional to 121,538.70, 182,502.45 and 82,269.90 is: 123,536.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,538.70 : 182,502.45 = 82,269.90 : x
  2. Step 2: Convert to fraction form
    121,538.70/182,502.45 = 82,269.90/x
  3. Step 3: Cross multiply
    121,538.70x = 182,502.45 × 82,269.90
  4. Step 4: Simplify right side
    121,538.70x = 15,014,458,311.26
  5. Step 5: Solve for x
    x = 15,014,458,311.26/121,538.70
  6. Step 6: Final answer
    x = 123,536.44

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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.