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Finding the Fourth Proportional to 121,630.05, 167,849.41 and 67,915.03

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Solution

The fourth proportional to 121,630.05, 167,849.41 and 67,915.03 is: 93,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,630.05 : 167,849.41 = 67,915.03 : x
  2. Step 2: Convert to fraction form
    121,630.05/167,849.41 = 67,915.03/x
  3. Step 3: Cross multiply
    121,630.05x = 167,849.41 × 67,915.03
  4. Step 4: Simplify right side
    121,630.05x = 11,399,497,715.63
  5. Step 5: Solve for x
    x = 11,399,497,715.63/121,630.05
  6. Step 6: Final answer
    x = 93,722.71

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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.