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Finding the Fourth Proportional to 126,692.90, 174,854.75 and 72,967.46

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Solution

The fourth proportional to 126,692.90, 174,854.75 and 72,967.46 is: 100,705.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,692.90 : 174,854.75 = 72,967.46 : x
  2. Step 2: Convert to fraction form
    126,692.90/174,854.75 = 72,967.46/x
  3. Step 3: Cross multiply
    126,692.90x = 174,854.75 × 72,967.46
  4. Step 4: Simplify right side
    126,692.90x = 12,758,706,976.44
  5. Step 5: Solve for x
    x = 12,758,706,976.44/126,692.90
  6. Step 6: Final answer
    x = 100,705.78

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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.