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Finding the Fourth Proportional to 149,640.80, 224,169.60 and 90,300.20

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Solution

The fourth proportional to 149,640.80, 224,169.60 and 90,300.20 is: 135,274.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,640.80 : 224,169.60 = 90,300.20 : x
  2. Step 2: Convert to fraction form
    149,640.80/224,169.60 = 90,300.20/x
  3. Step 3: Cross multiply
    149,640.80x = 224,169.60 × 90,300.20
  4. Step 4: Simplify right side
    149,640.80x = 20,242,559,713.92
  5. Step 5: Solve for x
    x = 20,242,559,713.92/149,640.80
  6. Step 6: Final answer
    x = 135,274.34

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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.