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Finding the Fourth Proportional to 118,257.78, 177,292.49 and 68,281.19

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Solution

The fourth proportional to 118,257.78, 177,292.49 and 68,281.19 is: 102,367.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,257.78 : 177,292.49 = 68,281.19 : x
  2. Step 2: Convert to fraction form
    118,257.78/177,292.49 = 68,281.19/x
  3. Step 3: Cross multiply
    118,257.78x = 177,292.49 × 68,281.19
  4. Step 4: Simplify right side
    118,257.78x = 12,105,740,967.39
  5. Step 5: Solve for x
    x = 12,105,740,967.39/118,257.78
  6. Step 6: Final answer
    x = 102,367.40

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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.