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Finding the Fourth Proportional to 101,963.96, 140,670.96 and 75,170.08

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Solution

The fourth proportional to 101,963.96, 140,670.96 and 75,170.08 is: 103,705.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,963.96 : 140,670.96 = 75,170.08 : x
  2. Step 2: Convert to fraction form
    101,963.96/140,670.96 = 75,170.08/x
  3. Step 3: Cross multiply
    101,963.96x = 140,670.96 × 75,170.08
  4. Step 4: Simplify right side
    101,963.96x = 10,574,247,316.88
  5. Step 5: Solve for x
    x = 10,574,247,316.88/101,963.96
  6. Step 6: Final answer
    x = 103,705.73

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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.