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Finding the Fourth Proportional to 116,734.40, 174,842.40 and 90,353.60

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Solution

The fourth proportional to 116,734.40, 174,842.40 and 90,353.60 is: 135,329.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,734.40 : 174,842.40 = 90,353.60 : x
  2. Step 2: Convert to fraction form
    116,734.40/174,842.40 = 90,353.60/x
  3. Step 3: Cross multiply
    116,734.40x = 174,842.40 × 90,353.60
  4. Step 4: Simplify right side
    116,734.40x = 15,797,640,272.64
  5. Step 5: Solve for x
    x = 15,797,640,272.64/116,734.40
  6. Step 6: Final answer
    x = 135,329.78

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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.