Home / 131,553.43-181,500.81-80,513.03

Finding the Fourth Proportional to 131,553.43, 181,500.81 and 80,513.03

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Solution

The fourth proportional to 131,553.43, 181,500.81 and 80,513.03 is: 111,081.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,553.43 : 181,500.81 = 80,513.03 : x
  2. Step 2: Convert to fraction form
    131,553.43/181,500.81 = 80,513.03/x
  3. Step 3: Cross multiply
    131,553.43x = 181,500.81 × 80,513.03
  4. Step 4: Simplify right side
    131,553.43x = 14,613,180,160.55
  5. Step 5: Solve for x
    x = 14,613,180,160.55/131,553.43
  6. Step 6: Final answer
    x = 111,081.71

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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.