Home / 120,608.72-180,915.82-45,764.12

Finding the Fourth Proportional to 120,608.72, 180,915.82 and 45,764.12

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Solution

The fourth proportional to 120,608.72, 180,915.82 and 45,764.12 is: 68,647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,608.72 : 180,915.82 = 45,764.12 : x
  2. Step 2: Convert to fraction form
    120,608.72/180,915.82 = 45,764.12/x
  3. Step 3: Cross multiply
    120,608.72x = 180,915.82 × 45,764.12
  4. Step 4: Simplify right side
    120,608.72x = 8,279,453,296.38
  5. Step 5: Solve for x
    x = 8,279,453,296.38/120,608.72
  6. Step 6: Final answer
    x = 68,647.22

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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.