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Finding the Fourth Proportional to 140,611.73, 194,043.67 and 76,080.77

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Solution

The fourth proportional to 140,611.73, 194,043.67 and 76,080.77 is: 104,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,611.73 : 194,043.67 = 76,080.77 : x
  2. Step 2: Convert to fraction form
    140,611.73/194,043.67 = 76,080.77/x
  3. Step 3: Cross multiply
    140,611.73x = 194,043.67 × 76,080.77
  4. Step 4: Simplify right side
    140,611.73x = 14,762,991,827.23
  5. Step 5: Solve for x
    x = 14,762,991,827.23/140,611.73
  6. Step 6: Final answer
    x = 104,991.18

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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.