Home / 129,046.36-178,092.84-71,692.60

Finding the Fourth Proportional to 129,046.36, 178,092.84 and 71,692.60

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Solution

The fourth proportional to 129,046.36, 178,092.84 and 71,692.60 is: 98,940.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,046.36 : 178,092.84 = 71,692.60 : x
  2. Step 2: Convert to fraction form
    129,046.36/178,092.84 = 71,692.60/x
  3. Step 3: Cross multiply
    129,046.36x = 178,092.84 × 71,692.60
  4. Step 4: Simplify right side
    129,046.36x = 12,767,938,740.98
  5. Step 5: Solve for x
    x = 12,767,938,740.98/129,046.36
  6. Step 6: Final answer
    x = 98,940.71

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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.