Home / 143,279.34-197,721.45-79,615.50

Finding the Fourth Proportional to 143,279.34, 197,721.45 and 79,615.50

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Solution

The fourth proportional to 143,279.34, 197,721.45 and 79,615.50 is: 109,867.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,279.34 : 197,721.45 = 79,615.50 : x
  2. Step 2: Convert to fraction form
    143,279.34/197,721.45 = 79,615.50/x
  3. Step 3: Cross multiply
    143,279.34x = 197,721.45 × 79,615.50
  4. Step 4: Simplify right side
    143,279.34x = 15,741,692,102.48
  5. Step 5: Solve for x
    x = 15,741,692,102.48/143,279.34
  6. Step 6: Final answer
    x = 109,867.15

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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.