Home / 121,514.72-167,686.36-66,321.92

Finding the Fourth Proportional to 121,514.72, 167,686.36 and 66,321.92

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Solution

The fourth proportional to 121,514.72, 167,686.36 and 66,321.92 is: 91,522.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,514.72 : 167,686.36 = 66,321.92 : x
  2. Step 2: Convert to fraction form
    121,514.72/167,686.36 = 66,321.92/x
  3. Step 3: Cross multiply
    121,514.72x = 167,686.36 × 66,321.92
  4. Step 4: Simplify right side
    121,514.72x = 11,121,281,353.01
  5. Step 5: Solve for x
    x = 11,121,281,353.01/121,514.72
  6. Step 6: Final answer
    x = 91,522.09

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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.