Home / 129,596.27-178,821.19-72,223.06

Finding the Fourth Proportional to 129,596.27, 178,821.19 and 72,223.06

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Solution

The fourth proportional to 129,596.27, 178,821.19 and 72,223.06 is: 99,655.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,596.27 : 178,821.19 = 72,223.06 : x
  2. Step 2: Convert to fraction form
    129,596.27/178,821.19 = 72,223.06/x
  3. Step 3: Cross multiply
    129,596.27x = 178,821.19 × 72,223.06
  4. Step 4: Simplify right side
    129,596.27x = 12,915,012,961.88
  5. Step 5: Solve for x
    x = 12,915,012,961.88/129,596.27
  6. Step 6: Final answer
    x = 99,655.75

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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.