Home / 121,961.40-182,996.42-77,576.64

Finding the Fourth Proportional to 121,961.40, 182,996.42 and 77,576.64

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Solution

The fourth proportional to 121,961.40, 182,996.42 and 77,576.64 is: 116,399.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,961.40 : 182,996.42 = 77,576.64 : x
  2. Step 2: Convert to fraction form
    121,961.40/182,996.42 = 77,576.64/x
  3. Step 3: Cross multiply
    121,961.40x = 182,996.42 × 77,576.64
  4. Step 4: Simplify right side
    121,961.40x = 14,196,247,007.75
  5. Step 5: Solve for x
    x = 14,196,247,007.75/121,961.40
  6. Step 6: Final answer
    x = 116,399.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.