Home / 121,686.18-167,910.30-67,964.37

Finding the Fourth Proportional to 121,686.18, 167,910.30 and 67,964.37

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Solution

The fourth proportional to 121,686.18, 167,910.30 and 67,964.37 is: 93,781.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,686.18 : 167,910.30 = 67,964.37 : x
  2. Step 2: Convert to fraction form
    121,686.18/167,910.30 = 67,964.37/x
  3. Step 3: Cross multiply
    121,686.18x = 167,910.30 × 67,964.37
  4. Step 4: Simplify right side
    121,686.18x = 11,411,917,756.01
  5. Step 5: Solve for x
    x = 11,411,917,756.01/121,686.18
  6. Step 6: Final answer
    x = 93,781.54

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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.