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Finding the Fourth Proportional to 133,730.58, 200,909.35 and 126,164.78

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Solution

The fourth proportional to 133,730.58, 200,909.35 and 126,164.78 is: 189,542.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,730.58 : 200,909.35 = 126,164.78 : x
  2. Step 2: Convert to fraction form
    133,730.58/200,909.35 = 126,164.78/x
  3. Step 3: Cross multiply
    133,730.58x = 200,909.35 × 126,164.78
  4. Step 4: Simplify right side
    133,730.58x = 25,347,683,942.69
  5. Step 5: Solve for x
    x = 25,347,683,942.69/133,730.58
  6. Step 6: Final answer
    x = 189,542.91

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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.