Home / 103,185.44-154,778.18-68,116.90

Finding the Fourth Proportional to 103,185.44, 154,778.18 and 68,116.90

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Solution

The fourth proportional to 103,185.44, 154,778.18 and 68,116.90 is: 102,175.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,185.44 : 154,778.18 = 68,116.90 : x
  2. Step 2: Convert to fraction form
    103,185.44/154,778.18 = 68,116.90/x
  3. Step 3: Cross multiply
    103,185.44x = 154,778.18 × 68,116.90
  4. Step 4: Simplify right side
    103,185.44x = 10,543,009,809.24
  5. Step 5: Solve for x
    x = 10,543,009,809.24/103,185.44
  6. Step 6: Final answer
    x = 102,175.36

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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.