Home / 112,121.97-154,602.61-91,640.46

Finding the Fourth Proportional to 112,121.97, 154,602.61 and 91,640.46

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Solution

The fourth proportional to 112,121.97, 154,602.61 and 91,640.46 is: 126,361.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,121.97 : 154,602.61 = 91,640.46 : x
  2. Step 2: Convert to fraction form
    112,121.97/154,602.61 = 91,640.46/x
  3. Step 3: Cross multiply
    112,121.97x = 154,602.61 × 91,640.46
  4. Step 4: Simplify right side
    112,121.97x = 14,167,854,297.60
  5. Step 5: Solve for x
    x = 14,167,854,297.60/112,121.97
  6. Step 6: Final answer
    x = 126,361.09

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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.