Home / 202,018.33-278,780.17-111,372.20

Finding the Fourth Proportional to 202,018.33, 278,780.17 and 111,372.20

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Solution

The fourth proportional to 202,018.33, 278,780.17 and 111,372.20 is: 153,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,018.33 : 278,780.17 = 111,372.20 : x
  2. Step 2: Convert to fraction form
    202,018.33/278,780.17 = 111,372.20/x
  3. Step 3: Cross multiply
    202,018.33x = 278,780.17 × 111,372.20
  4. Step 4: Simplify right side
    202,018.33x = 31,048,360,849.27
  5. Step 5: Solve for x
    x = 31,048,360,849.27/202,018.33
  6. Step 6: Final answer
    x = 153,690.81

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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.