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Finding the Fourth Proportional to 126,600, 174,692.88 and 70,003.68

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Solution

The fourth proportional to 126,600, 174,692.88 and 70,003.68 is: 96,596.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,600 : 174,692.88 = 70,003.68 : x
  2. Step 2: Convert to fraction form
    126,600/174,692.88 = 70,003.68/x
  3. Step 3: Cross multiply
    126,600x = 174,692.88 × 70,003.68
  4. Step 4: Simplify right side
    126,600x = 12,229,144,469.80
  5. Step 5: Solve for x
    x = 12,229,144,469.80/126,600
  6. Step 6: Final answer
    x = 96,596.72

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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.