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Finding the Fourth Proportional to 113,383.80, 169,929.90 and 68,963.40

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Solution

The fourth proportional to 113,383.80, 169,929.90 and 68,963.40 is: 103,356.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,383.80 : 169,929.90 = 68,963.40 : x
  2. Step 2: Convert to fraction form
    113,383.80/169,929.90 = 68,963.40/x
  3. Step 3: Cross multiply
    113,383.80x = 169,929.90 × 68,963.40
  4. Step 4: Simplify right side
    113,383.80x = 11,718,943,665.66
  5. Step 5: Solve for x
    x = 11,718,943,665.66/113,383.80
  6. Step 6: Final answer
    x = 103,356.42

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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.