Home / 151,631.25-209,183.49-87,932.16

Finding the Fourth Proportional to 151,631.25, 209,183.49 and 87,932.16

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Solution

The fourth proportional to 151,631.25, 209,183.49 and 87,932.16 is: 121,307.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,631.25 : 209,183.49 = 87,932.16 : x
  2. Step 2: Convert to fraction form
    151,631.25/209,183.49 = 87,932.16/x
  3. Step 3: Cross multiply
    151,631.25x = 209,183.49 × 87,932.16
  4. Step 4: Simplify right side
    151,631.25x = 18,393,956,112.04
  5. Step 5: Solve for x
    x = 18,393,956,112.04/151,631.25
  6. Step 6: Final answer
    x = 121,307.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.