Home / 142,811.48-197,079.43-79,149.28

Finding the Fourth Proportional to 142,811.48, 197,079.43 and 79,149.28

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Solution

The fourth proportional to 142,811.48, 197,079.43 and 79,149.28 is: 109,225.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,811.48 : 197,079.43 = 79,149.28 : x
  2. Step 2: Convert to fraction form
    142,811.48/197,079.43 = 79,149.28/x
  3. Step 3: Cross multiply
    142,811.48x = 197,079.43 × 79,149.28
  4. Step 4: Simplify right side
    142,811.48x = 15,598,694,987.31
  5. Step 5: Solve for x
    x = 15,598,694,987.31/142,811.48
  6. Step 6: Final answer
    x = 109,225.78

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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.