Home / 199,429.20-299,138.94-81,071.19

Finding the Fourth Proportional to 199,429.20, 299,138.94 and 81,071.19

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Solution

The fourth proportional to 199,429.20, 299,138.94 and 81,071.19 is: 121,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,429.20 : 299,138.94 = 81,071.19 : x
  2. Step 2: Convert to fraction form
    199,429.20/299,138.94 = 81,071.19/x
  3. Step 3: Cross multiply
    199,429.20x = 299,138.94 × 81,071.19
  4. Step 4: Simplify right side
    199,429.20x = 24,251,549,841.14
  5. Step 5: Solve for x
    x = 24,251,549,841.14/199,429.20
  6. Step 6: Final answer
    x = 121,604.81

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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.