Home / 110,721.20-166,081.80-81,196.70

Finding the Fourth Proportional to 110,721.20, 166,081.80 and 81,196.70

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Solution

The fourth proportional to 110,721.20, 166,081.80 and 81,196.70 is: 121,795.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,721.20 : 166,081.80 = 81,196.70 : x
  2. Step 2: Convert to fraction form
    110,721.20/166,081.80 = 81,196.70/x
  3. Step 3: Cross multiply
    110,721.20x = 166,081.80 × 81,196.70
  4. Step 4: Simplify right side
    110,721.20x = 13,485,294,090.06
  5. Step 5: Solve for x
    x = 13,485,294,090.06/110,721.20
  6. Step 6: Final answer
    x = 121,795.05

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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.