Home / 191,939.21-287,318.31-125,235.71

Finding the Fourth Proportional to 191,939.21, 287,318.31 and 125,235.71

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Solution

The fourth proportional to 191,939.21, 287,318.31 and 125,235.71 is: 187,468.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,939.21 : 287,318.31 = 125,235.71 : x
  2. Step 2: Convert to fraction form
    191,939.21/287,318.31 = 125,235.71/x
  3. Step 3: Cross multiply
    191,939.21x = 287,318.31 × 125,235.71
  4. Step 4: Simplify right side
    191,939.21x = 35,982,511,112.26
  5. Step 5: Solve for x
    x = 35,982,511,112.26/191,939.21
  6. Step 6: Final answer
    x = 187,468.27

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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.