Home / 127,918.38-191,878.05-39,171.54

Finding the Fourth Proportional to 127,918.38, 191,878.05 and 39,171.54

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Solution

The fourth proportional to 127,918.38, 191,878.05 and 39,171.54 is: 58,757.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,918.38 : 191,878.05 = 39,171.54 : x
  2. Step 2: Convert to fraction form
    127,918.38/191,878.05 = 39,171.54/x
  3. Step 3: Cross multiply
    127,918.38x = 191,878.05 × 39,171.54
  4. Step 4: Simplify right side
    127,918.38x = 7,516,158,710.70
  5. Step 5: Solve for x
    x = 7,516,158,710.70/127,918.38
  6. Step 6: Final answer
    x = 58,757.46

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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.