Home / 103,628.21-155,442.30-68,559.66

Finding the Fourth Proportional to 103,628.21, 155,442.30 and 68,559.66

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Solution

The fourth proportional to 103,628.21, 155,442.30 and 68,559.66 is: 102,839.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.21 : 155,442.30 = 68,559.66 : x
  2. Step 2: Convert to fraction form
    103,628.21/155,442.30 = 68,559.66/x
  3. Step 3: Cross multiply
    103,628.21x = 155,442.30 × 68,559.66
  4. Step 4: Simplify right side
    103,628.21x = 10,657,071,237.62
  5. Step 5: Solve for x
    x = 10,657,071,237.62/103,628.21
  6. Step 6: Final answer
    x = 102,839.49

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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.