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Finding the Fourth Proportional to 121,677.21, 167,723.87 and 111,901.23

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Solution

The fourth proportional to 121,677.21, 167,723.87 and 111,901.23 is: 154,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,677.21 : 167,723.87 = 111,901.23 : x
  2. Step 2: Convert to fraction form
    121,677.21/167,723.87 = 111,901.23/x
  3. Step 3: Cross multiply
    121,677.21x = 167,723.87 × 111,901.23
  4. Step 4: Simplify right side
    121,677.21x = 18,768,506,793.85
  5. Step 5: Solve for x
    x = 18,768,506,793.85/121,677.21
  6. Step 6: Final answer
    x = 154,248.33

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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.