Home / 137,719.80-206,288.10-122,945.40

Finding the Fourth Proportional to 137,719.80, 206,288.10 and 122,945.40

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Solution

The fourth proportional to 137,719.80, 206,288.10 and 122,945.40 is: 184,157.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,719.80 : 206,288.10 = 122,945.40 : x
  2. Step 2: Convert to fraction form
    137,719.80/206,288.10 = 122,945.40/x
  3. Step 3: Cross multiply
    137,719.80x = 206,288.10 × 122,945.40
  4. Step 4: Simplify right side
    137,719.80x = 25,362,172,969.74
  5. Step 5: Solve for x
    x = 25,362,172,969.74/137,719.80
  6. Step 6: Final answer
    x = 184,157.78

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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.