Home / 167,640.29-231,439.25-111,128.21

Finding the Fourth Proportional to 167,640.29, 231,439.25 and 111,128.21

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Solution

The fourth proportional to 167,640.29, 231,439.25 and 111,128.21 is: 153,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,640.29 : 231,439.25 = 111,128.21 : x
  2. Step 2: Convert to fraction form
    167,640.29/231,439.25 = 111,128.21/x
  3. Step 3: Cross multiply
    167,640.29x = 231,439.25 × 111,128.21
  4. Step 4: Simplify right side
    167,640.29x = 25,719,429,020.60
  5. Step 5: Solve for x
    x = 25,719,429,020.60/167,640.29
  6. Step 6: Final answer
    x = 153,420.33

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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.