Home / 202,021.47-278,791.52-111,380.66

Finding the Fourth Proportional to 202,021.47, 278,791.52 and 111,380.66

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Solution

The fourth proportional to 202,021.47, 278,791.52 and 111,380.66 is: 153,706.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,021.47 : 278,791.52 = 111,380.66 : x
  2. Step 2: Convert to fraction form
    202,021.47/278,791.52 = 111,380.66/x
  3. Step 3: Cross multiply
    202,021.47x = 278,791.52 × 111,380.66
  4. Step 4: Simplify right side
    202,021.47x = 31,051,981,549.14
  5. Step 5: Solve for x
    x = 31,051,981,549.14/202,021.47
  6. Step 6: Final answer
    x = 153,706.34

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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.