Home / 103,185.70-154,778.56-68,117.15

Finding the Fourth Proportional to 103,185.70, 154,778.56 and 68,117.15

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Solution

The fourth proportional to 103,185.70, 154,778.56 and 68,117.15 is: 102,175.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,185.70 : 154,778.56 = 68,117.15 : x
  2. Step 2: Convert to fraction form
    103,185.70/154,778.56 = 68,117.15/x
  3. Step 3: Cross multiply
    103,185.70x = 154,778.56 × 68,117.15
  4. Step 4: Simplify right side
    103,185.70x = 10,543,074,604.96
  5. Step 5: Solve for x
    x = 10,543,074,604.96/103,185.70
  6. Step 6: Final answer
    x = 102,175.74

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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.