Home / 81,118.14-111,815.91-74,600.82

Finding the Fourth Proportional to 81,118.14, 111,815.91 and 74,600.82

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Solution

The fourth proportional to 81,118.14, 111,815.91 and 74,600.82 is: 102,832.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,118.14 : 111,815.91 = 74,600.82 : x
  2. Step 2: Convert to fraction form
    81,118.14/111,815.91 = 74,600.82/x
  3. Step 3: Cross multiply
    81,118.14x = 111,815.91 × 74,600.82
  4. Step 4: Simplify right side
    81,118.14x = 8,341,558,575.05
  5. Step 5: Solve for x
    x = 8,341,558,575.05/81,118.14
  6. Step 6: Final answer
    x = 102,832.22

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1.5x scale

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.