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Finding the Fourth Proportional to 108,515.70, 162,773.55 and 69,101.10

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Solution

The fourth proportional to 108,515.70, 162,773.55 and 69,101.10 is: 103,651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,515.70 : 162,773.55 = 69,101.10 : x
  2. Step 2: Convert to fraction form
    108,515.70/162,773.55 = 69,101.10/x
  3. Step 3: Cross multiply
    108,515.70x = 162,773.55 × 69,101.10
  4. Step 4: Simplify right side
    108,515.70x = 11,247,831,355.91
  5. Step 5: Solve for x
    x = 11,247,831,355.91/108,515.70
  6. Step 6: Final answer
    x = 103,651.65

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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.