Home / 120,580.14-180,878.85-31,832.76

Finding the Fourth Proportional to 120,580.14, 180,878.85 and 31,832.76

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Solution

The fourth proportional to 120,580.14, 180,878.85 and 31,832.76 is: 47,751.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,580.14 : 180,878.85 = 31,832.76 : x
  2. Step 2: Convert to fraction form
    120,580.14/180,878.85 = 31,832.76/x
  3. Step 3: Cross multiply
    120,580.14x = 180,878.85 × 31,832.76
  4. Step 4: Simplify right side
    120,580.14x = 5,757,873,021.13
  5. Step 5: Solve for x
    x = 5,757,873,021.13/120,580.14
  6. Step 6: Final answer
    x = 47,751.42

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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.