Home / 131,243.40-196,865.10-104,999.40

Finding the Fourth Proportional to 131,243.40, 196,865.10 and 104,999.40

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Solution

The fourth proportional to 131,243.40, 196,865.10 and 104,999.40 is: 157,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,243.40 : 196,865.10 = 104,999.40 : x
  2. Step 2: Convert to fraction form
    131,243.40/196,865.10 = 104,999.40/x
  3. Step 3: Cross multiply
    131,243.40x = 196,865.10 × 104,999.40
  4. Step 4: Simplify right side
    131,243.40x = 20,670,717,380.94
  5. Step 5: Solve for x
    x = 20,670,717,380.94/131,243.40
  6. Step 6: Final answer
    x = 157,499.10

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Double scale
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Similar ratio
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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.