Home / 115,120.20-158,865.30-64,133.48

Finding the Fourth Proportional to 115,120.20, 158,865.30 and 64,133.48

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Solution

The fourth proportional to 115,120.20, 158,865.30 and 64,133.48 is: 88,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,120.20 : 158,865.30 = 64,133.48 : x
  2. Step 2: Convert to fraction form
    115,120.20/158,865.30 = 64,133.48/x
  3. Step 3: Cross multiply
    115,120.20x = 158,865.30 × 64,133.48
  4. Step 4: Simplify right side
    115,120.20x = 10,188,584,540.24
  5. Step 5: Solve for x
    x = 10,188,584,540.24/115,120.20
  6. Step 6: Final answer
    x = 88,503.88

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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.