Home / 121,013.10-181,519.65-115,569.90

Finding the Fourth Proportional to 121,013.10, 181,519.65 and 115,569.90

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Solution

The fourth proportional to 121,013.10, 181,519.65 and 115,569.90 is: 173,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,013.10 : 181,519.65 = 115,569.90 : x
  2. Step 2: Convert to fraction form
    121,013.10/181,519.65 = 115,569.90/x
  3. Step 3: Cross multiply
    121,013.10x = 181,519.65 × 115,569.90
  4. Step 4: Simplify right side
    121,013.10x = 20,978,207,798.54
  5. Step 5: Solve for x
    x = 20,978,207,798.54/121,013.10
  6. Step 6: Final answer
    x = 173,354.85

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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.