Home / 121,209.30-167,273.76-67,490.91

Finding the Fourth Proportional to 121,209.30, 167,273.76 and 67,490.91

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Solution

The fourth proportional to 121,209.30, 167,273.76 and 67,490.91 is: 93,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,209.30 : 167,273.76 = 67,490.91 : x
  2. Step 2: Convert to fraction form
    121,209.30/167,273.76 = 67,490.91/x
  3. Step 3: Cross multiply
    121,209.30x = 167,273.76 × 67,490.91
  4. Step 4: Simplify right side
    121,209.30x = 11,289,458,281.52
  5. Step 5: Solve for x
    x = 11,289,458,281.52/121,209.30
  6. Step 6: Final answer
    x = 93,140.20

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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.