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Finding the Fourth Proportional to 146,207.20, 218,965.20 and 99,205.60

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Solution

The fourth proportional to 146,207.20, 218,965.20 and 99,205.60 is: 148,573.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,207.20 : 218,965.20 = 99,205.60 : x
  2. Step 2: Convert to fraction form
    146,207.20/218,965.20 = 99,205.60/x
  3. Step 3: Cross multiply
    146,207.20x = 218,965.20 × 99,205.60
  4. Step 4: Simplify right side
    146,207.20x = 21,722,574,045.12
  5. Step 5: Solve for x
    x = 21,722,574,045.12/146,207.20
  6. Step 6: Final answer
    x = 148,573.90

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1.5x scale

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.