Home / 220,989.15-331,505.09-87,839.52

Finding the Fourth Proportional to 220,989.15, 331,505.09 and 87,839.52

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Solution

The fourth proportional to 220,989.15, 331,505.09 and 87,839.52 is: 131,767.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,989.15 : 331,505.09 = 87,839.52 : x
  2. Step 2: Convert to fraction form
    220,989.15/331,505.09 = 87,839.52/x
  3. Step 3: Cross multiply
    220,989.15x = 331,505.09 × 87,839.52
  4. Step 4: Simplify right side
    220,989.15x = 29,119,247,543.96
  5. Step 5: Solve for x
    x = 29,119,247,543.96/220,989.15
  6. Step 6: Final answer
    x = 131,767.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.