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Finding the Fourth Proportional to 115,889.40, 173,615.40 and 108,016.20

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Solution

The fourth proportional to 115,889.40, 173,615.40 and 108,016.20 is: 161,820.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,889.40 : 173,615.40 = 108,016.20 : x
  2. Step 2: Convert to fraction form
    115,889.40/173,615.40 = 108,016.20/x
  3. Step 3: Cross multiply
    115,889.40x = 173,615.40 × 108,016.20
  4. Step 4: Simplify right side
    115,889.40x = 18,753,275,769.48
  5. Step 5: Solve for x
    x = 18,753,275,769.48/115,889.40
  6. Step 6: Final answer
    x = 161,820.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.