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Finding the Fourth Proportional to 99,230.80, 148,846.20 and 65,842.60

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Solution

The fourth proportional to 99,230.80, 148,846.20 and 65,842.60 is: 98,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,230.80 : 148,846.20 = 65,842.60 : x
  2. Step 2: Convert to fraction form
    99,230.80/148,846.20 = 65,842.60/x
  3. Step 3: Cross multiply
    99,230.80x = 148,846.20 × 65,842.60
  4. Step 4: Simplify right side
    99,230.80x = 9,800,420,808.12
  5. Step 5: Solve for x
    x = 9,800,420,808.12/99,230.80
  6. Step 6: Final answer
    x = 98,763.90

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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.