Home / 188,019.39-282,115.21-81,435.95

Finding the Fourth Proportional to 188,019.39, 282,115.21 and 81,435.95

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Solution

The fourth proportional to 188,019.39, 282,115.21 and 81,435.95 is: 122,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,019.39 : 282,115.21 = 81,435.95 : x
  2. Step 2: Convert to fraction form
    188,019.39/282,115.21 = 81,435.95/x
  3. Step 3: Cross multiply
    188,019.39x = 282,115.21 × 81,435.95
  4. Step 4: Simplify right side
    188,019.39x = 22,974,318,725.22
  5. Step 5: Solve for x
    x = 22,974,318,725.22/188,019.39
  6. Step 6: Final answer
    x = 122,191.22

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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.