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Finding the Fourth Proportional to 135,566.69, 187,086.12 and 75,131.69

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Solution

The fourth proportional to 135,566.69, 187,086.12 and 75,131.69 is: 103,684.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,566.69 : 187,086.12 = 75,131.69 : x
  2. Step 2: Convert to fraction form
    135,566.69/187,086.12 = 75,131.69/x
  3. Step 3: Cross multiply
    135,566.69x = 187,086.12 × 75,131.69
  4. Step 4: Simplify right side
    135,566.69x = 14,056,096,371.14
  5. Step 5: Solve for x
    x = 14,056,096,371.14/135,566.69
  6. Step 6: Final answer
    x = 103,684.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.