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Finding the Fourth Proportional to 121,559.59, 167,655.79 and 73,811.91

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Solution

The fourth proportional to 121,559.59, 167,655.79 and 73,811.91 is: 101,801.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,559.59 : 167,655.79 = 73,811.91 : x
  2. Step 2: Convert to fraction form
    121,559.59/167,655.79 = 73,811.91/x
  3. Step 3: Cross multiply
    121,559.59x = 167,655.79 × 73,811.91
  4. Step 4: Simplify right side
    121,559.59x = 12,374,994,082.46
  5. Step 5: Solve for x
    x = 12,374,994,082.46/121,559.59
  6. Step 6: Final answer
    x = 101,801.87

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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.