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Finding the Fourth Proportional to 121,597.67, 167,797.80 and 67,886.10

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Solution

The fourth proportional to 121,597.67, 167,797.80 and 67,886.10 is: 93,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,597.67 : 167,797.80 = 67,886.10 : x
  2. Step 2: Convert to fraction form
    121,597.67/167,797.80 = 67,886.10/x
  3. Step 3: Cross multiply
    121,597.67x = 167,797.80 × 67,886.10
  4. Step 4: Simplify right side
    121,597.67x = 11,391,138,230.58
  5. Step 5: Solve for x
    x = 11,391,138,230.58/121,597.67
  6. Step 6: Final answer
    x = 93,678.92

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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.