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Finding the Fourth Proportional to 126,171.40, 189,084.30 and 102,843.40

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Solution

The fourth proportional to 126,171.40, 189,084.30 and 102,843.40 is: 154,124.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,171.40 : 189,084.30 = 102,843.40 : x
  2. Step 2: Convert to fraction form
    126,171.40/189,084.30 = 102,843.40/x
  3. Step 3: Cross multiply
    126,171.40x = 189,084.30 × 102,843.40
  4. Step 4: Simplify right side
    126,171.40x = 19,446,072,298.62
  5. Step 5: Solve for x
    x = 19,446,072,298.62/126,171.40
  6. Step 6: Final answer
    x = 154,124.25

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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.