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Finding the Fourth Proportional to 108,960.96, 150,378.30 and 65,964.15

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Solution

The fourth proportional to 108,960.96, 150,378.30 and 65,964.15 is: 91,037.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,960.96 : 150,378.30 = 65,964.15 : x
  2. Step 2: Convert to fraction form
    108,960.96/150,378.30 = 65,964.15/x
  3. Step 3: Cross multiply
    108,960.96x = 150,378.30 × 65,964.15
  4. Step 4: Simplify right side
    108,960.96x = 9,919,576,737.95
  5. Step 5: Solve for x
    x = 9,919,576,737.95/108,960.96
  6. Step 6: Final answer
    x = 91,037.90

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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.