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Finding the Fourth Proportional to 140,023.81, 209,847.39 and 76,749.04

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Solution

The fourth proportional to 140,023.81, 209,847.39 and 76,749.04 is: 115,020.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,023.81 : 209,847.39 = 76,749.04 : x
  2. Step 2: Convert to fraction form
    140,023.81/209,847.39 = 76,749.04/x
  3. Step 3: Cross multiply
    140,023.81x = 209,847.39 × 76,749.04
  4. Step 4: Simplify right side
    140,023.81x = 16,105,585,729.01
  5. Step 5: Solve for x
    x = 16,105,585,729.01/140,023.81
  6. Step 6: Final answer
    x = 115,020.34

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1.5x scale

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.