Home / 110,728.20-166,092.30-81,203.70

Finding the Fourth Proportional to 110,728.20, 166,092.30 and 81,203.70

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Solution

The fourth proportional to 110,728.20, 166,092.30 and 81,203.70 is: 121,805.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,728.20 : 166,092.30 = 81,203.70 : x
  2. Step 2: Convert to fraction form
    110,728.20/166,092.30 = 81,203.70/x
  3. Step 3: Cross multiply
    110,728.20x = 166,092.30 × 81,203.70
  4. Step 4: Simplify right side
    110,728.20x = 13,487,309,301.51
  5. Step 5: Solve for x
    x = 13,487,309,301.51/110,728.20
  6. Step 6: Final answer
    x = 121,805.55

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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.