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Finding the Fourth Proportional to 188,081.10, 282,121.65 and 69,740.10

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Solution

The fourth proportional to 188,081.10, 282,121.65 and 69,740.10 is: 104,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,081.10 : 282,121.65 = 69,740.10 : x
  2. Step 2: Convert to fraction form
    188,081.10/282,121.65 = 69,740.10/x
  3. Step 3: Cross multiply
    188,081.10x = 282,121.65 × 69,740.10
  4. Step 4: Simplify right side
    188,081.10x = 19,675,192,083.17
  5. Step 5: Solve for x
    x = 19,675,192,083.17/188,081.10
  6. Step 6: Final answer
    x = 104,610.15

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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.