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Finding the Fourth Proportional to 180,648.70, 270,863.70 and 80,790.28

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Solution

The fourth proportional to 180,648.70, 270,863.70 and 80,790.28 is: 121,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,648.70 : 270,863.70 = 80,790.28 : x
  2. Step 2: Convert to fraction form
    180,648.70/270,863.70 = 80,790.28/x
  3. Step 3: Cross multiply
    180,648.70x = 270,863.70 × 80,790.28
  4. Step 4: Simplify right side
    180,648.70x = 21,883,154,164.84
  5. Step 5: Solve for x
    x = 21,883,154,164.84/180,648.70
  6. Step 6: Final answer
    x = 121,136.52

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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.