Home / 99,801.20-149,571.80-40,567.68

Finding the Fourth Proportional to 99,801.20, 149,571.80 and 40,567.68

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Solution

The fourth proportional to 99,801.20, 149,571.80 and 40,567.68 is: 60,798.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,801.20 : 149,571.80 = 40,567.68 : x
  2. Step 2: Convert to fraction form
    99,801.20/149,571.80 = 40,567.68/x
  3. Step 3: Cross multiply
    99,801.20x = 149,571.80 × 40,567.68
  4. Step 4: Simplify right side
    99,801.20x = 6,067,780,919.42
  5. Step 5: Solve for x
    x = 6,067,780,919.42/99,801.20
  6. Step 6: Final answer
    x = 60,798.68

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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.