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Finding the Fourth Proportional to 100,379.38, 138,535.12 and 60,093.12

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Solution

The fourth proportional to 100,379.38, 138,535.12 and 60,093.12 is: 82,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,379.38 : 138,535.12 = 60,093.12 : x
  2. Step 2: Convert to fraction form
    100,379.38/138,535.12 = 60,093.12/x
  3. Step 3: Cross multiply
    100,379.38x = 138,535.12 × 60,093.12
  4. Step 4: Simplify right side
    100,379.38x = 8,325,007,590.37
  5. Step 5: Solve for x
    x = 8,325,007,590.37/100,379.38
  6. Step 6: Final answer
    x = 82,935.44

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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.