Home / 103,187.57-154,781.39-68,119.03

Finding the Fourth Proportional to 103,187.57, 154,781.39 and 68,119.03

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Solution

The fourth proportional to 103,187.57, 154,781.39 and 68,119.03 is: 102,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,187.57 : 154,781.39 = 68,119.03 : x
  2. Step 2: Convert to fraction form
    103,187.57/154,781.39 = 68,119.03/x
  3. Step 3: Cross multiply
    103,187.57x = 154,781.39 × 68,119.03
  4. Step 4: Simplify right side
    103,187.57x = 10,543,558,148.85
  5. Step 5: Solve for x
    x = 10,543,558,148.85/103,187.57
  6. Step 6: Final answer
    x = 102,178.57

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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.