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Finding the Fourth Proportional to 110,939.80, 166,409.70 and 104,816.20

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Solution

The fourth proportional to 110,939.80, 166,409.70 and 104,816.20 is: 157,224.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,939.80 : 166,409.70 = 104,816.20 : x
  2. Step 2: Convert to fraction form
    110,939.80/166,409.70 = 104,816.20/x
  3. Step 3: Cross multiply
    110,939.80x = 166,409.70 × 104,816.20
  4. Step 4: Simplify right side
    110,939.80x = 17,442,432,397.14
  5. Step 5: Solve for x
    x = 17,442,432,397.14/110,939.80
  6. Step 6: Final answer
    x = 157,224.30

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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.