Home / 110,939.40-166,409.10-99,129.60

Finding the Fourth Proportional to 110,939.40, 166,409.10 and 99,129.60

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Solution

The fourth proportional to 110,939.40, 166,409.10 and 99,129.60 is: 148,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,939.40 : 166,409.10 = 99,129.60 : x
  2. Step 2: Convert to fraction form
    110,939.40/166,409.10 = 99,129.60/x
  3. Step 3: Cross multiply
    110,939.40x = 166,409.10 × 99,129.60
  4. Step 4: Simplify right side
    110,939.40x = 16,496,067,519.36
  5. Step 5: Solve for x
    x = 16,496,067,519.36/110,939.40
  6. Step 6: Final answer
    x = 148,694.40

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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.