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Finding the Fourth Proportional to 108,502.80, 162,754.20 and 71,299.50

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Solution

The fourth proportional to 108,502.80, 162,754.20 and 71,299.50 is: 106,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,502.80 : 162,754.20 = 71,299.50 : x
  2. Step 2: Convert to fraction form
    108,502.80/162,754.20 = 71,299.50/x
  3. Step 3: Cross multiply
    108,502.80x = 162,754.20 × 71,299.50
  4. Step 4: Simplify right side
    108,502.80x = 11,604,293,082.90
  5. Step 5: Solve for x
    x = 11,604,293,082.90/108,502.80
  6. Step 6: Final answer
    x = 106,949.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.