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Finding the Fourth Proportional to 103,581.60, 155,487.60 and 64,183.20

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Solution

The fourth proportional to 103,581.60, 155,487.60 and 64,183.20 is: 96,346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,581.60 : 155,487.60 = 64,183.20 : x
  2. Step 2: Convert to fraction form
    103,581.60/155,487.60 = 64,183.20/x
  3. Step 3: Cross multiply
    103,581.60x = 155,487.60 × 64,183.20
  4. Step 4: Simplify right side
    103,581.60x = 9,979,691,728.32
  5. Step 5: Solve for x
    x = 9,979,691,728.32/103,581.60
  6. Step 6: Final answer
    x = 96,346.18

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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.