Home / 129,086.06-178,155.47-72,497.44

Finding the Fourth Proportional to 129,086.06, 178,155.47 and 72,497.44

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Solution

The fourth proportional to 129,086.06, 178,155.47 and 72,497.44 is: 100,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,086.06 : 178,155.47 = 72,497.44 : x
  2. Step 2: Convert to fraction form
    129,086.06/178,155.47 = 72,497.44/x
  3. Step 3: Cross multiply
    129,086.06x = 178,155.47 × 72,497.44
  4. Step 4: Simplify right side
    129,086.06x = 12,915,815,232.85
  5. Step 5: Solve for x
    x = 12,915,815,232.85/129,086.06
  6. Step 6: Final answer
    x = 100,055.85

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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.