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Finding the Fourth Proportional to 179,745.30, 269,715.15 and 79,920.90

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Solution

The fourth proportional to 179,745.30, 269,715.15 and 79,920.90 is: 119,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,745.30 : 269,715.15 = 79,920.90 : x
  2. Step 2: Convert to fraction form
    179,745.30/269,715.15 = 79,920.90/x
  3. Step 3: Cross multiply
    179,745.30x = 269,715.15 × 79,920.90
  4. Step 4: Simplify right side
    179,745.30x = 21,555,877,531.64
  5. Step 5: Solve for x
    x = 21,555,877,531.64/179,745.30
  6. Step 6: Final answer
    x = 119,924.57

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1.5x scale

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.