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Finding the Fourth Proportional to 99,179.40, 148,914.90 and 69,727.80

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Solution

The fourth proportional to 99,179.40, 148,914.90 and 69,727.80 is: 104,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,179.40 : 148,914.90 = 69,727.80 : x
  2. Step 2: Convert to fraction form
    99,179.40/148,914.90 = 69,727.80/x
  3. Step 3: Cross multiply
    99,179.40x = 148,914.90 × 69,727.80
  4. Step 4: Simplify right side
    99,179.40x = 10,383,508,364.22
  5. Step 5: Solve for x
    x = 10,383,508,364.22/99,179.40
  6. Step 6: Final answer
    x = 104,694.20

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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.