Home / 121,874.55-168,229.17-83,760.27

Finding the Fourth Proportional to 121,874.55, 168,229.17 and 83,760.27

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Solution

The fourth proportional to 121,874.55, 168,229.17 and 83,760.27 is: 115,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,874.55 : 168,229.17 = 83,760.27 : x
  2. Step 2: Convert to fraction form
    121,874.55/168,229.17 = 83,760.27/x
  3. Step 3: Cross multiply
    121,874.55x = 168,229.17 × 83,760.27
  4. Step 4: Simplify right side
    121,874.55x = 14,090,920,701.08
  5. Step 5: Solve for x
    x = 14,090,920,701.08/121,874.55
  6. Step 6: Final answer
    x = 115,618.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.