Home / 102,745.78-141,786.51-57,424.14

Finding the Fourth Proportional to 102,745.78, 141,786.51 and 57,424.14

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Solution

The fourth proportional to 102,745.78, 141,786.51 and 57,424.14 is: 79,243.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,745.78 : 141,786.51 = 57,424.14 : x
  2. Step 2: Convert to fraction form
    102,745.78/141,786.51 = 57,424.14/x
  3. Step 3: Cross multiply
    102,745.78x = 141,786.51 × 57,424.14
  4. Step 4: Simplify right side
    102,745.78x = 8,141,968,400.35
  5. Step 5: Solve for x
    x = 8,141,968,400.35/102,745.78
  6. Step 6: Final answer
    x = 79,243.82

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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.