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Finding the Fourth Proportional to 188,715.69, 283,091.76 and 68,804.91

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Solution

The fourth proportional to 188,715.69, 283,091.76 and 68,804.91 is: 103,214.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,715.69 : 283,091.76 = 68,804.91 : x
  2. Step 2: Convert to fraction form
    188,715.69/283,091.76 = 68,804.91/x
  3. Step 3: Cross multiply
    188,715.69x = 283,091.76 × 68,804.91
  4. Step 4: Simplify right side
    188,715.69x = 19,478,103,068.54
  5. Step 5: Solve for x
    x = 19,478,103,068.54/188,715.69
  6. Step 6: Final answer
    x = 103,214.01

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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.