Home / 154,200.32-212,801.60-87,136.64

Finding the Fourth Proportional to 154,200.32, 212,801.60 and 87,136.64

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Solution

The fourth proportional to 154,200.32, 212,801.60 and 87,136.64 is: 120,251.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,200.32 : 212,801.60 = 87,136.64 : x
  2. Step 2: Convert to fraction form
    154,200.32/212,801.60 = 87,136.64/x
  3. Step 3: Cross multiply
    154,200.32x = 212,801.60 × 87,136.64
  4. Step 4: Simplify right side
    154,200.32x = 18,542,816,410.62
  5. Step 5: Solve for x
    x = 18,542,816,410.62/154,200.32
  6. Step 6: Final answer
    x = 120,251.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.