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Finding the Fourth Proportional to 137,991.28, 206,799.72 and 63,018.48

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Solution

The fourth proportional to 137,991.28, 206,799.72 and 63,018.48 is: 94,442.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,991.28 : 206,799.72 = 63,018.48 : x
  2. Step 2: Convert to fraction form
    137,991.28/206,799.72 = 63,018.48/x
  3. Step 3: Cross multiply
    137,991.28x = 206,799.72 × 63,018.48
  4. Step 4: Simplify right side
    137,991.28x = 13,032,204,018.83
  5. Step 5: Solve for x
    x = 13,032,204,018.83/137,991.28
  6. Step 6: Final answer
    x = 94,442.23

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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.