Home / 202,017.33-278,778.79-111,371.20

Finding the Fourth Proportional to 202,017.33, 278,778.79 and 111,371.20

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Solution

The fourth proportional to 202,017.33, 278,778.79 and 111,371.20 is: 153,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,017.33 : 278,778.79 = 111,371.20 : x
  2. Step 2: Convert to fraction form
    202,017.33/278,778.79 = 111,371.20/x
  3. Step 3: Cross multiply
    202,017.33x = 278,778.79 × 111,371.20
  4. Step 4: Simplify right side
    202,017.33x = 31,047,928,376.85
  5. Step 5: Solve for x
    x = 31,047,928,376.85/202,017.33
  6. Step 6: Final answer
    x = 153,689.43

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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.