Home / 142,885.28-197,180.72-79,223.04

Finding the Fourth Proportional to 142,885.28, 197,180.72 and 79,223.04

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Solution

The fourth proportional to 142,885.28, 197,180.72 and 79,223.04 is: 109,327.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,885.28 : 197,180.72 = 79,223.04 : x
  2. Step 2: Convert to fraction form
    142,885.28/197,180.72 = 79,223.04/x
  3. Step 3: Cross multiply
    142,885.28x = 197,180.72 × 79,223.04
  4. Step 4: Simplify right side
    142,885.28x = 15,621,256,067.79
  5. Step 5: Solve for x
    x = 15,621,256,067.79/142,885.28
  6. Step 6: Final answer
    x = 109,327.26

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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.