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Finding the Fourth Proportional to 108,342.84, 149,540.94 and 65,931.24

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Solution

The fourth proportional to 108,342.84, 149,540.94 and 65,931.24 is: 91,002.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,342.84 : 149,540.94 = 65,931.24 : x
  2. Step 2: Convert to fraction form
    108,342.84/149,540.94 = 65,931.24/x
  3. Step 3: Cross multiply
    108,342.84x = 149,540.94 × 65,931.24
  4. Step 4: Simplify right side
    108,342.84x = 9,859,419,604.97
  5. Step 5: Solve for x
    x = 9,859,419,604.97/108,342.84
  6. Step 6: Final answer
    x = 91,002.04

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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.