Home / 110,516.40-165,580.20-90,687.60

Finding the Fourth Proportional to 110,516.40, 165,580.20 and 90,687.60

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Solution

The fourth proportional to 110,516.40, 165,580.20 and 90,687.60 is: 135,871.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,516.40 : 165,580.20 = 90,687.60 : x
  2. Step 2: Convert to fraction form
    110,516.40/165,580.20 = 90,687.60/x
  3. Step 3: Cross multiply
    110,516.40x = 165,580.20 × 90,687.60
  4. Step 4: Simplify right side
    110,516.40x = 15,016,070,945.52
  5. Step 5: Solve for x
    x = 15,016,070,945.52/110,516.40
  6. Step 6: Final answer
    x = 135,871.88

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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.