Home / 143,279.70-197,722.02-79,615.86

Finding the Fourth Proportional to 143,279.70, 197,722.02 and 79,615.86

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Solution

The fourth proportional to 143,279.70, 197,722.02 and 79,615.86 is: 109,867.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,279.70 : 197,722.02 = 79,615.86 : x
  2. Step 2: Convert to fraction form
    143,279.70/197,722.02 = 79,615.86/x
  3. Step 3: Cross multiply
    143,279.70x = 197,722.02 × 79,615.86
  4. Step 4: Simplify right side
    143,279.70x = 15,741,808,663.24
  5. Step 5: Solve for x
    x = 15,741,808,663.24/143,279.70
  6. Step 6: Final answer
    x = 109,867.68

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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.