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Finding the Fourth Proportional to 144,292.98, 199,120.50 and 80,631.30

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Solution

The fourth proportional to 144,292.98, 199,120.50 and 80,631.30 is: 111,269.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,292.98 : 199,120.50 = 80,631.30 : x
  2. Step 2: Convert to fraction form
    144,292.98/199,120.50 = 80,631.30/x
  3. Step 3: Cross multiply
    144,292.98x = 199,120.50 × 80,631.30
  4. Step 4: Simplify right side
    144,292.98x = 16,055,344,771.65
  5. Step 5: Solve for x
    x = 16,055,344,771.65/144,292.98
  6. Step 6: Final answer
    x = 111,269.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.