Home / 131,021.72-180,816.38-73,679.09

Finding the Fourth Proportional to 131,021.72, 180,816.38 and 73,679.09

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Solution

The fourth proportional to 131,021.72, 180,816.38 and 73,679.09 is: 101,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.72 : 180,816.38 = 73,679.09 : x
  2. Step 2: Convert to fraction form
    131,021.72/180,816.38 = 73,679.09/x
  3. Step 3: Cross multiply
    131,021.72x = 180,816.38 × 73,679.09
  4. Step 4: Simplify right side
    131,021.72x = 13,322,386,335.49
  5. Step 5: Solve for x
    x = 13,322,386,335.49/131,021.72
  6. Step 6: Final answer
    x = 101,680.75

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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.