Home / 99,815.40-149,723.10-40,620.60

Finding the Fourth Proportional to 99,815.40, 149,723.10 and 40,620.60

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Solution

The fourth proportional to 99,815.40, 149,723.10 and 40,620.60 is: 60,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815.40 : 149,723.10 = 40,620.60 : x
  2. Step 2: Convert to fraction form
    99,815.40/149,723.10 = 40,620.60/x
  3. Step 3: Cross multiply
    99,815.40x = 149,723.10 × 40,620.60
  4. Step 4: Simplify right side
    99,815.40x = 6,081,842,155.86
  5. Step 5: Solve for x
    x = 6,081,842,155.86/99,815.40
  6. Step 6: Final answer
    x = 60,930.90

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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.