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Finding the Fourth Proportional to 98,155.52, 135,420.10 and 64,183.88

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Solution

The fourth proportional to 98,155.52, 135,420.10 and 64,183.88 is: 88,551.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,155.52 : 135,420.10 = 64,183.88 : x
  2. Step 2: Convert to fraction form
    98,155.52/135,420.10 = 64,183.88/x
  3. Step 3: Cross multiply
    98,155.52x = 135,420.10 × 64,183.88
  4. Step 4: Simplify right side
    98,155.52x = 8,691,787,447.99
  5. Step 5: Solve for x
    x = 8,691,787,447.99/98,155.52
  6. Step 6: Final answer
    x = 88,551.18

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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.