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Finding the Fourth Proportional to 150,671.90, 207,912.06 and 90,240.95

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Solution

The fourth proportional to 150,671.90, 207,912.06 and 90,240.95 is: 124,523.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,671.90 : 207,912.06 = 90,240.95 : x
  2. Step 2: Convert to fraction form
    150,671.90/207,912.06 = 90,240.95/x
  3. Step 3: Cross multiply
    150,671.90x = 207,912.06 × 90,240.95
  4. Step 4: Simplify right side
    150,671.90x = 18,762,180,771.30
  5. Step 5: Solve for x
    x = 18,762,180,771.30/150,671.90
  6. Step 6: Final answer
    x = 124,523.43

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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.