Home / 129,173.45-178,260.26-72,584.82

Finding the Fourth Proportional to 129,173.45, 178,260.26 and 72,584.82

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Solution

The fourth proportional to 129,173.45, 178,260.26 and 72,584.82 is: 100,167.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,173.45 : 178,260.26 = 72,584.82 : x
  2. Step 2: Convert to fraction form
    129,173.45/178,260.26 = 72,584.82/x
  3. Step 3: Cross multiply
    129,173.45x = 178,260.26 × 72,584.82
  4. Step 4: Simplify right side
    129,173.45x = 12,938,988,522.33
  5. Step 5: Solve for x
    x = 12,938,988,522.33/129,173.45
  6. Step 6: Final answer
    x = 100,167.56

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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.