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Finding the Fourth Proportional to 149,809.80, 224,423.10 and 90,469.20

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Solution

The fourth proportional to 149,809.80, 224,423.10 and 90,469.20 is: 135,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,809.80 : 224,423.10 = 90,469.20 : x
  2. Step 2: Convert to fraction form
    149,809.80/224,423.10 = 90,469.20/x
  3. Step 3: Cross multiply
    149,809.80x = 224,423.10 × 90,469.20
  4. Step 4: Simplify right side
    149,809.80x = 20,303,378,318.52
  5. Step 5: Solve for x
    x = 20,303,378,318.52/149,809.80
  6. Step 6: Final answer
    x = 135,527.70

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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.