Home / 199,972.40-299,958.60-132,612.80

Finding the Fourth Proportional to 199,972.40, 299,958.60 and 132,612.80

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Solution

The fourth proportional to 199,972.40, 299,958.60 and 132,612.80 is: 198,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,972.40 : 299,958.60 = 132,612.80 : x
  2. Step 2: Convert to fraction form
    199,972.40/299,958.60 = 132,612.80/x
  3. Step 3: Cross multiply
    199,972.40x = 299,958.60 × 132,612.80
  4. Step 4: Simplify right side
    199,972.40x = 39,778,349,830.08
  5. Step 5: Solve for x
    x = 39,778,349,830.08/199,972.40
  6. Step 6: Final answer
    x = 198,919.20

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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.