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Finding the Fourth Proportional to 140,750.48, 194,238.87 and 77,087.72

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Solution

The fourth proportional to 140,750.48, 194,238.87 and 77,087.72 is: 106,382.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,750.48 : 194,238.87 = 77,087.72 : x
  2. Step 2: Convert to fraction form
    140,750.48/194,238.87 = 77,087.72/x
  3. Step 3: Cross multiply
    140,750.48x = 194,238.87 × 77,087.72
  4. Step 4: Simplify right side
    140,750.48x = 14,973,431,623.68
  5. Step 5: Solve for x
    x = 14,973,431,623.68/140,750.48
  6. Step 6: Final answer
    x = 106,382.81

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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.