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Finding the Fourth Proportional to 140,933.32, 194,486.50 and 77,270.96

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Solution

The fourth proportional to 140,933.32, 194,486.50 and 77,270.96 is: 106,633.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,933.32 : 194,486.50 = 77,270.96 : x
  2. Step 2: Convert to fraction form
    140,933.32/194,486.50 = 77,270.96/x
  3. Step 3: Cross multiply
    140,933.32x = 194,486.50 × 77,270.96
  4. Step 4: Simplify right side
    140,933.32x = 15,028,158,562.04
  5. Step 5: Solve for x
    x = 15,028,158,562.04/140,933.32
  6. Step 6: Final answer
    x = 106,633.11

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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.