Home / 126,588.84-174,768.40-78,906.80

Finding the Fourth Proportional to 126,588.84, 174,768.40 and 78,906.80

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Solution

The fourth proportional to 126,588.84, 174,768.40 and 78,906.80 is: 108,938.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,588.84 : 174,768.40 = 78,906.80 : x
  2. Step 2: Convert to fraction form
    126,588.84/174,768.40 = 78,906.80/x
  3. Step 3: Cross multiply
    126,588.84x = 174,768.40 × 78,906.80
  4. Step 4: Simplify right side
    126,588.84x = 13,790,415,185.12
  5. Step 5: Solve for x
    x = 13,790,415,185.12/126,588.84
  6. Step 6: Final answer
    x = 108,938.63

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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.