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Finding the Fourth Proportional to 193,451.88, 290,002.65 and 68,763.72

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Solution

The fourth proportional to 193,451.88, 290,002.65 and 68,763.72 is: 103,083.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,451.88 : 290,002.65 = 68,763.72 : x
  2. Step 2: Convert to fraction form
    193,451.88/290,002.65 = 68,763.72/x
  3. Step 3: Cross multiply
    193,451.88x = 290,002.65 × 68,763.72
  4. Step 4: Simplify right side
    193,451.88x = 19,941,661,023.86
  5. Step 5: Solve for x
    x = 19,941,661,023.86/193,451.88
  6. Step 6: Final answer
    x = 103,083.31

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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.