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Finding the Fourth Proportional to 131,164.60, 196,746.90 and 104,920.60

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Solution

The fourth proportional to 131,164.60, 196,746.90 and 104,920.60 is: 157,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,164.60 : 196,746.90 = 104,920.60 : x
  2. Step 2: Convert to fraction form
    131,164.60/196,746.90 = 104,920.60/x
  3. Step 3: Cross multiply
    131,164.60x = 196,746.90 × 104,920.60
  4. Step 4: Simplify right side
    131,164.60x = 20,642,802,796.14
  5. Step 5: Solve for x
    x = 20,642,802,796.14/131,164.60
  6. Step 6: Final answer
    x = 157,380.90

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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.