Home / 127,876.40-191,807.68-39,129.92

Finding the Fourth Proportional to 127,876.40, 191,807.68 and 39,129.92

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Solution

The fourth proportional to 127,876.40, 191,807.68 and 39,129.92 is: 58,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,876.40 : 191,807.68 = 39,129.92 : x
  2. Step 2: Convert to fraction form
    127,876.40/191,807.68 = 39,129.92/x
  3. Step 3: Cross multiply
    127,876.40x = 191,807.68 × 39,129.92
  4. Step 4: Simplify right side
    127,876.40x = 7,505,419,173.79
  5. Step 5: Solve for x
    x = 7,505,419,173.79/127,876.40
  6. Step 6: Final answer
    x = 58,692.76

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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.