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Finding the Fourth Proportional to 121,652.69, 167,881.41 and 67,942.40

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Solution

The fourth proportional to 121,652.69, 167,881.41 and 67,942.40 is: 93,760.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,652.69 : 167,881.41 = 67,942.40 : x
  2. Step 2: Convert to fraction form
    121,652.69/167,881.41 = 67,942.40/x
  3. Step 3: Cross multiply
    121,652.69x = 167,881.41 × 67,942.40
  4. Step 4: Simplify right side
    121,652.69x = 11,406,265,071.38
  5. Step 5: Solve for x
    x = 11,406,265,071.38/121,652.69
  6. Step 6: Final answer
    x = 93,760.90

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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.