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Finding the Fourth Proportional to 121,655.62, 167,885.11 and 67,942.67

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Solution

The fourth proportional to 121,655.62, 167,885.11 and 67,942.67 is: 93,761.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,655.62 : 167,885.11 = 67,942.67 : x
  2. Step 2: Convert to fraction form
    121,655.62/167,885.11 = 67,942.67/x
  3. Step 3: Cross multiply
    121,655.62x = 167,885.11 × 67,942.67
  4. Step 4: Simplify right side
    121,655.62x = 11,406,561,489.97
  5. Step 5: Solve for x
    x = 11,406,561,489.97/121,655.62
  6. Step 6: Final answer
    x = 93,761.07

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1.5x scale

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.