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Finding the Fourth Proportional to 108,667, 149,961 and 63,376.39

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Solution

The fourth proportional to 108,667, 149,961 and 63,376.39 is: 87,459.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,667 : 149,961 = 63,376.39 : x
  2. Step 2: Convert to fraction form
    108,667/149,961 = 63,376.39/x
  3. Step 3: Cross multiply
    108,667x = 149,961 × 63,376.39
  4. Step 4: Simplify right side
    108,667x = 9,503,986,820.79
  5. Step 5: Solve for x
    x = 9,503,986,820.79/108,667
  6. Step 6: Final answer
    x = 87,459.73

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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.