Home / 121,721.16-167,972.08-68,006.56

Finding the Fourth Proportional to 121,721.16, 167,972.08 and 68,006.56

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Solution

The fourth proportional to 121,721.16, 167,972.08 and 68,006.56 is: 93,847.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,721.16 : 167,972.08 = 68,006.56 : x
  2. Step 2: Convert to fraction form
    121,721.16/167,972.08 = 68,006.56/x
  3. Step 3: Cross multiply
    121,721.16x = 167,972.08 × 68,006.56
  4. Step 4: Simplify right side
    121,721.16x = 11,423,203,336.84
  5. Step 5: Solve for x
    x = 11,423,203,336.84/121,721.16
  6. Step 6: Final answer
    x = 93,847.31

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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.