Home / 129,083.06-178,151.33-72,494.44

Finding the Fourth Proportional to 129,083.06, 178,151.33 and 72,494.44

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Solution

The fourth proportional to 129,083.06, 178,151.33 and 72,494.44 is: 100,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,083.06 : 178,151.33 = 72,494.44 : x
  2. Step 2: Convert to fraction form
    129,083.06/178,151.33 = 72,494.44/x
  3. Step 3: Cross multiply
    129,083.06x = 178,151.33 × 72,494.44
  4. Step 4: Simplify right side
    129,083.06x = 12,914,980,639.46
  5. Step 5: Solve for x
    x = 12,914,980,639.46/129,083.06
  6. Step 6: Final answer
    x = 100,051.71

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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.