Home / 131,255.84-181,128.25-80,249.54

Finding the Fourth Proportional to 131,255.84, 181,128.25 and 80,249.54

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Solution

The fourth proportional to 131,255.84, 181,128.25 and 80,249.54 is: 110,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,255.84 : 181,128.25 = 80,249.54 : x
  2. Step 2: Convert to fraction form
    131,255.84/181,128.25 = 80,249.54/x
  3. Step 3: Cross multiply
    131,255.84x = 181,128.25 × 80,249.54
  4. Step 4: Simplify right side
    131,255.84x = 14,535,457,938.18
  5. Step 5: Solve for x
    x = 14,535,457,938.18/131,255.84
  6. Step 6: Final answer
    x = 110,741.42

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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.