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Finding the Fourth Proportional to 140,602.64, 194,031.65 and 76,940.44

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Solution

The fourth proportional to 140,602.64, 194,031.65 and 76,940.44 is: 106,177.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,602.64 : 194,031.65 = 76,940.44 : x
  2. Step 2: Convert to fraction form
    140,602.64/194,031.65 = 76,940.44/x
  3. Step 3: Cross multiply
    140,602.64x = 194,031.65 × 76,940.44
  4. Step 4: Simplify right side
    140,602.64x = 14,928,880,232.20
  5. Step 5: Solve for x
    x = 14,928,880,232.20/140,602.64
  6. Step 6: Final answer
    x = 106,177.81

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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.