Home / 121,540.38-182,309.49-42,636.12

Finding the Fourth Proportional to 121,540.38, 182,309.49 and 42,636.12

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Solution

The fourth proportional to 121,540.38, 182,309.49 and 42,636.12 is: 63,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,540.38 : 182,309.49 = 42,636.12 : x
  2. Step 2: Convert to fraction form
    121,540.38/182,309.49 = 42,636.12/x
  3. Step 3: Cross multiply
    121,540.38x = 182,309.49 × 42,636.12
  4. Step 4: Simplify right side
    121,540.38x = 7,772,969,292.78
  5. Step 5: Solve for x
    x = 7,772,969,292.78/121,540.38
  6. Step 6: Final answer
    x = 63,953.80

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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.