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Finding the Fourth Proportional to 140,080.48, 209,945.76 and 90,027.34

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Solution

The fourth proportional to 140,080.48, 209,945.76 and 90,027.34 is: 134,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,080.48 : 209,945.76 = 90,027.34 : x
  2. Step 2: Convert to fraction form
    140,080.48/209,945.76 = 90,027.34/x
  3. Step 3: Cross multiply
    140,080.48x = 209,945.76 × 90,027.34
  4. Step 4: Simplify right side
    140,080.48x = 18,900,858,317.08
  5. Step 5: Solve for x
    x = 18,900,858,317.08/140,080.48
  6. Step 6: Final answer
    x = 134,928.57

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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.