Home / 153,949.20-231,161.40-83,965.20

Finding the Fourth Proportional to 153,949.20, 231,161.40 and 83,965.20

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Solution

The fourth proportional to 153,949.20, 231,161.40 and 83,965.20 is: 126,077.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,949.20 : 231,161.40 = 83,965.20 : x
  2. Step 2: Convert to fraction form
    153,949.20/231,161.40 = 83,965.20/x
  3. Step 3: Cross multiply
    153,949.20x = 231,161.40 × 83,965.20
  4. Step 4: Simplify right side
    153,949.20x = 19,409,513,183.28
  5. Step 5: Solve for x
    x = 19,409,513,183.28/153,949.20
  6. Step 6: Final answer
    x = 126,077.39

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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.