Home / 105,138.82-145,093.53-57,393.87

Finding the Fourth Proportional to 105,138.82, 145,093.53 and 57,393.87

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Solution

The fourth proportional to 105,138.82, 145,093.53 and 57,393.87 is: 79,204.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,138.82 : 145,093.53 = 57,393.87 : x
  2. Step 2: Convert to fraction form
    105,138.82/145,093.53 = 57,393.87/x
  3. Step 3: Cross multiply
    105,138.82x = 145,093.53 × 57,393.87
  4. Step 4: Simplify right side
    105,138.82x = 8,327,479,198.66
  5. Step 5: Solve for x
    x = 8,327,479,198.66/105,138.82
  6. Step 6: Final answer
    x = 79,204.61

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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.