Home / 120,943.92-181,290.60-87,580.56

Finding the Fourth Proportional to 120,943.92, 181,290.60 and 87,580.56

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Solution

The fourth proportional to 120,943.92, 181,290.60 and 87,580.56 is: 131,280.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,943.92 : 181,290.60 = 87,580.56 : x
  2. Step 2: Convert to fraction form
    120,943.92/181,290.60 = 87,580.56/x
  3. Step 3: Cross multiply
    120,943.92x = 181,290.60 × 87,580.56
  4. Step 4: Simplify right side
    120,943.92x = 15,877,532,270.74
  5. Step 5: Solve for x
    x = 15,877,532,270.74/120,943.92
  6. Step 6: Final answer
    x = 131,280.12

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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.