Home / 155,932.21-215,185.41-87,949.75

Finding the Fourth Proportional to 155,932.21, 215,185.41 and 87,949.75

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Solution

The fourth proportional to 155,932.21, 215,185.41 and 87,949.75 is: 121,370.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,932.21 : 215,185.41 = 87,949.75 : x
  2. Step 2: Convert to fraction form
    155,932.21/215,185.41 = 87,949.75/x
  3. Step 3: Cross multiply
    155,932.21x = 215,185.41 × 87,949.75
  4. Step 4: Simplify right side
    155,932.21x = 18,925,503,013.15
  5. Step 5: Solve for x
    x = 18,925,503,013.15/155,932.21
  6. Step 6: Final answer
    x = 121,370.07

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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.