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Finding the Fourth Proportional to 126,982.80, 190,913.40 and 118,760.40

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Solution

The fourth proportional to 126,982.80, 190,913.40 and 118,760.40 is: 178,551.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,982.80 : 190,913.40 = 118,760.40 : x
  2. Step 2: Convert to fraction form
    126,982.80/190,913.40 = 118,760.40/x
  3. Step 3: Cross multiply
    126,982.80x = 190,913.40 × 118,760.40
  4. Step 4: Simplify right side
    126,982.80x = 22,672,951,749.36
  5. Step 5: Solve for x
    x = 22,672,951,749.36/126,982.80
  6. Step 6: Final answer
    x = 178,551.36

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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.