Home / 127,961.40-191,942.10-118,630.20

Finding the Fourth Proportional to 127,961.40, 191,942.10 and 118,630.20

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Solution

The fourth proportional to 127,961.40, 191,942.10 and 118,630.20 is: 177,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,961.40 : 191,942.10 = 118,630.20 : x
  2. Step 2: Convert to fraction form
    127,961.40/191,942.10 = 118,630.20/x
  3. Step 3: Cross multiply
    127,961.40x = 191,942.10 × 118,630.20
  4. Step 4: Simplify right side
    127,961.40x = 22,770,129,711.42
  5. Step 5: Solve for x
    x = 22,770,129,711.42/127,961.40
  6. Step 6: Final answer
    x = 177,945.30

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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.