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Finding the Fourth Proportional to 144,352.71, 199,198.62 and 79,818.21

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Solution

The fourth proportional to 144,352.71, 199,198.62 and 79,818.21 is: 110,144.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,352.71 : 199,198.62 = 79,818.21 : x
  2. Step 2: Convert to fraction form
    144,352.71/199,198.62 = 79,818.21/x
  3. Step 3: Cross multiply
    144,352.71x = 199,198.62 × 79,818.21
  4. Step 4: Simplify right side
    144,352.71x = 15,899,677,282.87
  5. Step 5: Solve for x
    x = 15,899,677,282.87/144,352.71
  6. Step 6: Final answer
    x = 110,144.64

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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.