Home / 155,922.75-215,174.00-87,015.15

Finding the Fourth Proportional to 155,922.75, 215,174.00 and 87,015.15

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Solution

The fourth proportional to 155,922.75, 215,174.00 and 87,015.15 is: 120,081.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,922.75 : 215,174.00 = 87,015.15 : x
  2. Step 2: Convert to fraction form
    155,922.75/215,174.00 = 87,015.15/x
  3. Step 3: Cross multiply
    155,922.75x = 215,174.00 × 87,015.15
  4. Step 4: Simplify right side
    155,922.75x = 18,723,397,451.02
  5. Step 5: Solve for x
    x = 18,723,397,451.02/155,922.75
  6. Step 6: Final answer
    x = 120,081.24

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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.