Home / 143,717.22-198,335.79-80,055

Finding the Fourth Proportional to 143,717.22, 198,335.79 and 80,055

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Solution

The fourth proportional to 143,717.22, 198,335.79 and 80,055 is: 110,479.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,717.22 : 198,335.79 = 80,055 : x
  2. Step 2: Convert to fraction form
    143,717.22/198,335.79 = 80,055/x
  3. Step 3: Cross multiply
    143,717.22x = 198,335.79 × 80,055
  4. Step 4: Simplify right side
    143,717.22x = 15,877,771,668.45
  5. Step 5: Solve for x
    x = 15,877,771,668.45/143,717.22
  6. Step 6: Final answer
    x = 110,479.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.