Home / 137,914.14-206,485.78-74,507.09

Finding the Fourth Proportional to 137,914.14, 206,485.78 and 74,507.09

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Solution

The fourth proportional to 137,914.14, 206,485.78 and 74,507.09 is: 111,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,914.14 : 206,485.78 = 74,507.09 : x
  2. Step 2: Convert to fraction form
    137,914.14/206,485.78 = 74,507.09/x
  3. Step 3: Cross multiply
    137,914.14x = 206,485.78 × 74,507.09
  4. Step 4: Simplify right side
    137,914.14x = 15,384,653,700.78
  5. Step 5: Solve for x
    x = 15,384,653,700.78/137,914.14
  6. Step 6: Final answer
    x = 111,552.40

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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.