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Finding the Fourth Proportional to 135,204.40, 202,921.80 and 60,439.60

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Solution

The fourth proportional to 135,204.40, 202,921.80 and 60,439.60 is: 90,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,204.40 : 202,921.80 = 60,439.60 : x
  2. Step 2: Convert to fraction form
    135,204.40/202,921.80 = 60,439.60/x
  3. Step 3: Cross multiply
    135,204.40x = 202,921.80 × 60,439.60
  4. Step 4: Simplify right side
    135,204.40x = 12,264,512,423.28
  5. Step 5: Solve for x
    x = 12,264,512,423.28/135,204.40
  6. Step 6: Final answer
    x = 90,710.90

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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.