Home / 112,367.70-155,249.73-111,261.78

Finding the Fourth Proportional to 112,367.70, 155,249.73 and 111,261.78

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Solution

The fourth proportional to 112,367.70, 155,249.73 and 111,261.78 is: 153,721.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,367.70 : 155,249.73 = 111,261.78 : x
  2. Step 2: Convert to fraction form
    112,367.70/155,249.73 = 111,261.78/x
  3. Step 3: Cross multiply
    112,367.70x = 155,249.73 × 111,261.78
  4. Step 4: Simplify right side
    112,367.70x = 17,273,361,304.32
  5. Step 5: Solve for x
    x = 17,273,361,304.32/112,367.70
  6. Step 6: Final answer
    x = 153,721.77

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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.