Home / 217,664.25-300,395.54-120,886.78

Finding the Fourth Proportional to 217,664.25, 300,395.54 and 120,886.78

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Solution

The fourth proportional to 217,664.25, 300,395.54 and 120,886.78 is: 166,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,664.25 : 300,395.54 = 120,886.78 : x
  2. Step 2: Convert to fraction form
    217,664.25/300,395.54 = 120,886.78/x
  3. Step 3: Cross multiply
    217,664.25x = 300,395.54 × 120,886.78
  4. Step 4: Simplify right side
    217,664.25x = 36,313,849,556.96
  5. Step 5: Solve for x
    x = 36,313,849,556.96/217,664.25
  6. Step 6: Final answer
    x = 166,834.24

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1.5x scale

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.