Home / 137,721.80-206,291.10-122,947.40

Finding the Fourth Proportional to 137,721.80, 206,291.10 and 122,947.40

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Solution

The fourth proportional to 137,721.80, 206,291.10 and 122,947.40 is: 184,160.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,721.80 : 206,291.10 = 122,947.40 : x
  2. Step 2: Convert to fraction form
    137,721.80/206,291.10 = 122,947.40/x
  3. Step 3: Cross multiply
    137,721.80x = 206,291.10 × 122,947.40
  4. Step 4: Simplify right side
    137,721.80x = 25,362,954,388.14
  5. Step 5: Solve for x
    x = 25,362,954,388.14/137,721.80
  6. Step 6: Final answer
    x = 184,160.78

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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.