Home / 102,540.78-141,506.09-57,216.03

Finding the Fourth Proportional to 102,540.78, 141,506.09 and 57,216.03

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Solution

The fourth proportional to 102,540.78, 141,506.09 and 57,216.03 is: 78,958.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,540.78 : 141,506.09 = 57,216.03 : x
  2. Step 2: Convert to fraction form
    102,540.78/141,506.09 = 57,216.03/x
  3. Step 3: Cross multiply
    102,540.78x = 141,506.09 × 57,216.03
  4. Step 4: Simplify right side
    102,540.78x = 8,096,416,404.54
  5. Step 5: Solve for x
    x = 8,096,416,404.54/102,540.78
  6. Step 6: Final answer
    x = 78,958.01

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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.