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Finding the Fourth Proportional to 135,506.96, 187,092.96 and 103,620.32

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Solution

The fourth proportional to 135,506.96, 187,092.96 and 103,620.32 is: 143,067.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,506.96 : 187,092.96 = 103,620.32 : x
  2. Step 2: Convert to fraction form
    135,506.96/187,092.96 = 103,620.32/x
  3. Step 3: Cross multiply
    135,506.96x = 187,092.96 × 103,620.32
  4. Step 4: Simplify right side
    135,506.96x = 19,386,632,384.95
  5. Step 5: Solve for x
    x = 19,386,632,384.95/135,506.96
  6. Step 6: Final answer
    x = 143,067.43

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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.