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Finding the Fourth Proportional to 121,521.48, 167,711.24 and 73,763.88

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Solution

The fourth proportional to 121,521.48, 167,711.24 and 73,763.88 is: 101,801.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,521.48 : 167,711.24 = 73,763.88 : x
  2. Step 2: Convert to fraction form
    121,521.48/167,711.24 = 73,763.88/x
  3. Step 3: Cross multiply
    121,521.48x = 167,711.24 × 73,763.88
  4. Step 4: Simplify right side
    121,521.48x = 12,371,031,782.01
  5. Step 5: Solve for x
    x = 12,371,031,782.01/121,521.48
  6. Step 6: Final answer
    x = 101,801.19

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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.