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Finding the Fourth Proportional to 149,571.86, 224,170.69 and 74,712.90

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Solution

The fourth proportional to 149,571.86, 224,170.69 and 74,712.90 is: 111,975.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,571.86 : 224,170.69 = 74,712.90 : x
  2. Step 2: Convert to fraction form
    149,571.86/224,170.69 = 74,712.90/x
  3. Step 3: Cross multiply
    149,571.86x = 224,170.69 × 74,712.90
  4. Step 4: Simplify right side
    149,571.86x = 16,748,440,850.48
  5. Step 5: Solve for x
    x = 16,748,440,850.48/149,571.86
  6. Step 6: Final answer
    x = 111,975.88

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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.