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Finding the Fourth Proportional to 144,279.12, 216,396.81 and 50,763

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Solution

The fourth proportional to 144,279.12, 216,396.81 and 50,763 is: 76,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,279.12 : 216,396.81 = 50,763 : x
  2. Step 2: Convert to fraction form
    144,279.12/216,396.81 = 50,763/x
  3. Step 3: Cross multiply
    144,279.12x = 216,396.81 × 50,763
  4. Step 4: Simplify right side
    144,279.12x = 10,984,951,266.03
  5. Step 5: Solve for x
    x = 10,984,951,266.03/144,279.12
  6. Step 6: Final answer
    x = 76,136.81

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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.