Home / 150,720.72-207,989.22-85,308.15

Finding the Fourth Proportional to 150,720.72, 207,989.22 and 85,308.15

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Solution

The fourth proportional to 150,720.72, 207,989.22 and 85,308.15 is: 117,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,720.72 : 207,989.22 = 85,308.15 : x
  2. Step 2: Convert to fraction form
    150,720.72/207,989.22 = 85,308.15/x
  3. Step 3: Cross multiply
    150,720.72x = 207,989.22 × 85,308.15
  4. Step 4: Simplify right side
    150,720.72x = 17,743,175,148.18
  5. Step 5: Solve for x
    x = 17,743,175,148.18/150,720.72
  6. Step 6: Final answer
    x = 117,722.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.