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Finding the Fourth Proportional to 146,209.20, 218,968.20 and 99,207.60

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Solution

The fourth proportional to 146,209.20, 218,968.20 and 99,207.60 is: 148,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,209.20 : 218,968.20 = 99,207.60 : x
  2. Step 2: Convert to fraction form
    146,209.20/218,968.20 = 99,207.60/x
  3. Step 3: Cross multiply
    146,209.20x = 218,968.20 × 99,207.60
  4. Step 4: Simplify right side
    146,209.20x = 21,723,309,598.32
  5. Step 5: Solve for x
    x = 21,723,309,598.32/146,209.20
  6. Step 6: Final answer
    x = 148,576.90

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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.