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Finding the Fourth Proportional to 127,852.40, 191,778.60 and 74,489.60

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Solution

The fourth proportional to 127,852.40, 191,778.60 and 74,489.60 is: 111,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,852.40 : 191,778.60 = 74,489.60 : x
  2. Step 2: Convert to fraction form
    127,852.40/191,778.60 = 74,489.60/x
  3. Step 3: Cross multiply
    127,852.40x = 191,778.60 × 74,489.60
  4. Step 4: Simplify right side
    127,852.40x = 14,285,511,202.56
  5. Step 5: Solve for x
    x = 14,285,511,202.56/127,852.40
  6. Step 6: Final answer
    x = 111,734.40

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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.