Home / 140,645.07-194,090.27-76,983.21

Finding the Fourth Proportional to 140,645.07, 194,090.27 and 76,983.21

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Solution

The fourth proportional to 140,645.07, 194,090.27 and 76,983.21 is: 106,236.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,645.07 : 194,090.27 = 76,983.21 : x
  2. Step 2: Convert to fraction form
    140,645.07/194,090.27 = 76,983.21/x
  3. Step 3: Cross multiply
    140,645.07x = 194,090.27 × 76,983.21
  4. Step 4: Simplify right side
    140,645.07x = 14,941,691,629.45
  5. Step 5: Solve for x
    x = 14,941,691,629.45/140,645.07
  6. Step 6: Final answer
    x = 106,236.87

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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.