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Finding the Fourth Proportional to 131,806.60, 197,724.30 and 127,659.40

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Solution

The fourth proportional to 131,806.60, 197,724.30 and 127,659.40 is: 191,503.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,806.60 : 197,724.30 = 127,659.40 : x
  2. Step 2: Convert to fraction form
    131,806.60/197,724.30 = 127,659.40/x
  3. Step 3: Cross multiply
    131,806.60x = 197,724.30 × 127,659.40
  4. Step 4: Simplify right side
    131,806.60x = 25,241,365,503.42
  5. Step 5: Solve for x
    x = 25,241,365,503.42/131,806.60
  6. Step 6: Final answer
    x = 191,503.05

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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.