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Finding the Fourth Proportional to 108,517.70, 162,776.55 and 67,045.70

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Solution

The fourth proportional to 108,517.70, 162,776.55 and 67,045.70 is: 100,568.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,517.70 : 162,776.55 = 67,045.70 : x
  2. Step 2: Convert to fraction form
    108,517.70/162,776.55 = 67,045.70/x
  3. Step 3: Cross multiply
    108,517.70x = 162,776.55 × 67,045.70
  4. Step 4: Simplify right side
    108,517.70x = 10,913,467,738.34
  5. Step 5: Solve for x
    x = 10,913,467,738.34/108,517.70
  6. Step 6: Final answer
    x = 100,568.55

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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.