Home / 103,418.26-155,127.80-68,350.12

Finding the Fourth Proportional to 103,418.26, 155,127.80 and 68,350.12

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Solution

The fourth proportional to 103,418.26, 155,127.80 and 68,350.12 is: 102,525.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,418.26 : 155,127.80 = 68,350.12 : x
  2. Step 2: Convert to fraction form
    103,418.26/155,127.80 = 68,350.12/x
  3. Step 3: Cross multiply
    103,418.26x = 155,127.80 × 68,350.12
  4. Step 4: Simplify right side
    103,418.26x = 10,603,003,745.34
  5. Step 5: Solve for x
    x = 10,603,003,745.34/103,418.26
  6. Step 6: Final answer
    x = 102,525.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.