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Finding the Fourth Proportional to 108,236.85, 149,270.13 and 67,954.38

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Solution

The fourth proportional to 108,236.85, 149,270.13 and 67,954.38 is: 93,716.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,236.85 : 149,270.13 = 67,954.38 : x
  2. Step 2: Convert to fraction form
    108,236.85/149,270.13 = 67,954.38/x
  3. Step 3: Cross multiply
    108,236.85x = 149,270.13 × 67,954.38
  4. Step 4: Simplify right side
    108,236.85x = 10,143,559,136.67
  5. Step 5: Solve for x
    x = 10,143,559,136.67/108,236.85
  6. Step 6: Final answer
    x = 93,716.32

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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.