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Finding the Fourth Proportional to 118,266.84, 177,306 and 68,290.20

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Solution

The fourth proportional to 118,266.84, 177,306 and 68,290.20 is: 102,380.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,266.84 : 177,306 = 68,290.20 : x
  2. Step 2: Convert to fraction form
    118,266.84/177,306 = 68,290.20/x
  3. Step 3: Cross multiply
    118,266.84x = 177,306 × 68,290.20
  4. Step 4: Simplify right side
    118,266.84x = 12,108,262,201.20
  5. Step 5: Solve for x
    x = 12,108,262,201.20/118,266.84
  6. Step 6: Final answer
    x = 102,380.87

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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.