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Finding the Fourth Proportional to 121,020.65, 167,006.12 and 67,304.51

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Solution

The fourth proportional to 121,020.65, 167,006.12 and 67,304.51 is: 92,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,020.65 : 167,006.12 = 67,304.51 : x
  2. Step 2: Convert to fraction form
    121,020.65/167,006.12 = 67,304.51/x
  3. Step 3: Cross multiply
    121,020.65x = 167,006.12 × 67,304.51
  4. Step 4: Simplify right side
    121,020.65x = 11,240,264,780.71
  5. Step 5: Solve for x
    x = 11,240,264,780.71/121,020.65
  6. Step 6: Final answer
    x = 92,878.90

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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.