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Finding the Fourth Proportional to 99,228.80, 148,843.20 and 65,840.60

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Solution

The fourth proportional to 99,228.80, 148,843.20 and 65,840.60 is: 98,760.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,228.80 : 148,843.20 = 65,840.60 : x
  2. Step 2: Convert to fraction form
    99,228.80/148,843.20 = 65,840.60/x
  3. Step 3: Cross multiply
    99,228.80x = 148,843.20 × 65,840.60
  4. Step 4: Simplify right side
    99,228.80x = 9,799,925,593.92
  5. Step 5: Solve for x
    x = 9,799,925,593.92/99,228.80
  6. Step 6: Final answer
    x = 98,760.90

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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.