Home / 155,961.50-215,247.93-87,992.42

Finding the Fourth Proportional to 155,961.50, 215,247.93 and 87,992.42

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Solution

The fourth proportional to 155,961.50, 215,247.93 and 87,992.42 is: 121,441.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,961.50 : 215,247.93 = 87,992.42 : x
  2. Step 2: Convert to fraction form
    155,961.50/215,247.93 = 87,992.42/x
  3. Step 3: Cross multiply
    155,961.50x = 215,247.93 × 87,992.42
  4. Step 4: Simplify right side
    155,961.50x = 18,940,186,260.69
  5. Step 5: Solve for x
    x = 18,940,186,260.69/155,961.50
  6. Step 6: Final answer
    x = 121,441.42

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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.