Home / 100,168.38-150,031.05-68,503.38

Finding the Fourth Proportional to 100,168.38, 150,031.05 and 68,503.38

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Solution

The fourth proportional to 100,168.38, 150,031.05 and 68,503.38 is: 102,603.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,168.38 : 150,031.05 = 68,503.38 : x
  2. Step 2: Convert to fraction form
    100,168.38/150,031.05 = 68,503.38/x
  3. Step 3: Cross multiply
    100,168.38x = 150,031.05 × 68,503.38
  4. Step 4: Simplify right side
    100,168.38x = 10,277,634,029.95
  5. Step 5: Solve for x
    x = 10,277,634,029.95/100,168.38
  6. Step 6: Final answer
    x = 102,603.58

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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.