Home / 103,605.41-155,408.13-68,536.86

Finding the Fourth Proportional to 103,605.41, 155,408.13 and 68,536.86

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Solution

The fourth proportional to 103,605.41, 155,408.13 and 68,536.86 is: 102,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,605.41 : 155,408.13 = 68,536.86 : x
  2. Step 2: Convert to fraction form
    103,605.41/155,408.13 = 68,536.86/x
  3. Step 3: Cross multiply
    103,605.41x = 155,408.13 × 68,536.86
  4. Step 4: Simplify right side
    103,605.41x = 10,651,185,248.67
  5. Step 5: Solve for x
    x = 10,651,185,248.67/103,605.41
  6. Step 6: Final answer
    x = 102,805.30

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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.