Home / 155,867.72-215,093.13-87,884.09

Finding the Fourth Proportional to 155,867.72, 215,093.13 and 87,884.09

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Solution

The fourth proportional to 155,867.72, 215,093.13 and 87,884.09 is: 121,277.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,867.72 : 215,093.13 = 87,884.09 : x
  2. Step 2: Convert to fraction form
    155,867.72/215,093.13 = 87,884.09/x
  3. Step 3: Cross multiply
    155,867.72x = 215,093.13 × 87,884.09
  4. Step 4: Simplify right side
    155,867.72x = 18,903,263,995.30
  5. Step 5: Solve for x
    x = 18,903,263,995.30/155,867.72
  6. Step 6: Final answer
    x = 121,277.61

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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.