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Finding the Fourth Proportional to 188,567.79, 283,029.42 and 68,740.61

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Solution

The fourth proportional to 188,567.79, 283,029.42 and 68,740.61 is: 103,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,567.79 : 283,029.42 = 68,740.61 : x
  2. Step 2: Convert to fraction form
    188,567.79/283,029.42 = 68,740.61/x
  3. Step 3: Cross multiply
    188,567.79x = 283,029.42 × 68,740.61
  4. Step 4: Simplify right side
    188,567.79x = 19,455,613,875.38
  5. Step 5: Solve for x
    x = 19,455,613,875.38/188,567.79
  6. Step 6: Final answer
    x = 103,175.70

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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.