Home / 121,521.11-167,695.16-66,328.29

Finding the Fourth Proportional to 121,521.11, 167,695.16 and 66,328.29

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Solution

The fourth proportional to 121,521.11, 167,695.16 and 66,328.29 is: 91,530.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,521.11 : 167,695.16 = 66,328.29 : x
  2. Step 2: Convert to fraction form
    121,521.11/167,695.16 = 66,328.29/x
  3. Step 3: Cross multiply
    121,521.11x = 167,695.16 × 66,328.29
  4. Step 4: Simplify right side
    121,521.11x = 11,122,932,872.43
  5. Step 5: Solve for x
    x = 11,122,932,872.43/121,521.11
  6. Step 6: Final answer
    x = 91,530.87

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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.