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Finding the Fourth Proportional to 140,507.79, 193,904.07 and 80,084.05

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Solution

The fourth proportional to 140,507.79, 193,904.07 and 80,084.05 is: 110,517.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,507.79 : 193,904.07 = 80,084.05 : x
  2. Step 2: Convert to fraction form
    140,507.79/193,904.07 = 80,084.05/x
  3. Step 3: Cross multiply
    140,507.79x = 193,904.07 × 80,084.05
  4. Step 4: Simplify right side
    140,507.79x = 15,528,623,237.08
  5. Step 5: Solve for x
    x = 15,528,623,237.08/140,507.79
  6. Step 6: Final answer
    x = 110,517.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.