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Finding the Fourth Proportional to 162,423.20, 243,375.60 and 135,984.80

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Solution

The fourth proportional to 162,423.20, 243,375.60 and 135,984.80 is: 203,760.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,423.20 : 243,375.60 = 135,984.80 : x
  2. Step 2: Convert to fraction form
    162,423.20/243,375.60 = 135,984.80/x
  3. Step 3: Cross multiply
    162,423.20x = 243,375.60 × 135,984.80
  4. Step 4: Simplify right side
    162,423.20x = 33,095,382,290.88
  5. Step 5: Solve for x
    x = 33,095,382,290.88/162,423.20
  6. Step 6: Final answer
    x = 203,760.19

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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.