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Finding the Fourth Proportional to 100,391.42, 150,512.23 and 60,401.03

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Solution

The fourth proportional to 100,391.42, 150,512.23 and 60,401.03 is: 90,556.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,391.42 : 150,512.23 = 60,401.03 : x
  2. Step 2: Convert to fraction form
    100,391.42/150,512.23 = 60,401.03/x
  3. Step 3: Cross multiply
    100,391.42x = 150,512.23 × 60,401.03
  4. Step 4: Simplify right side
    100,391.42x = 9,091,093,417.59
  5. Step 5: Solve for x
    x = 9,091,093,417.59/100,391.42
  6. Step 6: Final answer
    x = 90,556.48

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1.5x scale

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.