Home / 111,026.70-166,540.05-81,502.20

Finding the Fourth Proportional to 111,026.70, 166,540.05 and 81,502.20

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Solution

The fourth proportional to 111,026.70, 166,540.05 and 81,502.20 is: 122,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,026.70 : 166,540.05 = 81,502.20 : x
  2. Step 2: Convert to fraction form
    111,026.70/166,540.05 = 81,502.20/x
  3. Step 3: Cross multiply
    111,026.70x = 166,540.05 × 81,502.20
  4. Step 4: Simplify right side
    111,026.70x = 13,573,380,463.11
  5. Step 5: Solve for x
    x = 13,573,380,463.11/111,026.70
  6. Step 6: Final answer
    x = 122,253.30

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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.