Home / 121,721.12-167,972.02-68,006.51

Finding the Fourth Proportional to 121,721.12, 167,972.02 and 68,006.51

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Solution

The fourth proportional to 121,721.12, 167,972.02 and 68,006.51 is: 93,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,721.12 : 167,972.02 = 68,006.51 : x
  2. Step 2: Convert to fraction form
    121,721.12/167,972.02 = 68,006.51/x
  3. Step 3: Cross multiply
    121,721.12x = 167,972.02 × 68,006.51
  4. Step 4: Simplify right side
    121,721.12x = 11,423,190,857.85
  5. Step 5: Solve for x
    x = 11,423,190,857.85/121,721.12
  6. Step 6: Final answer
    x = 93,847.24

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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.