Home / 149,979.60-206,972.40-81,995.52

Finding the Fourth Proportional to 149,979.60, 206,972.40 and 81,995.52

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Solution

The fourth proportional to 149,979.60, 206,972.40 and 81,995.52 is: 113,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,979.60 : 206,972.40 = 81,995.52 : x
  2. Step 2: Convert to fraction form
    149,979.60/206,972.40 = 81,995.52/x
  3. Step 3: Cross multiply
    149,979.60x = 206,972.40 × 81,995.52
  4. Step 4: Simplify right side
    149,979.60x = 16,970,809,563.65
  5. Step 5: Solve for x
    x = 16,970,809,563.65/149,979.60
  6. Step 6: Final answer
    x = 113,154.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.