Home / 143,698.20-215,439.84-99,197.88

Finding the Fourth Proportional to 143,698.20, 215,439.84 and 99,197.88

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Solution

The fourth proportional to 143,698.20, 215,439.84 and 99,197.88 is: 148,722.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,698.20 : 215,439.84 = 99,197.88 : x
  2. Step 2: Convert to fraction form
    143,698.20/215,439.84 = 99,197.88/x
  3. Step 3: Cross multiply
    143,698.20x = 215,439.84 × 99,197.88
  4. Step 4: Simplify right side
    143,698.20x = 21,371,175,395.54
  5. Step 5: Solve for x
    x = 21,371,175,395.54/143,698.20
  6. Step 6: Final answer
    x = 148,722.64

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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.