Home / 115,905.44-173,916.48-86,382.56

Finding the Fourth Proportional to 115,905.44, 173,916.48 and 86,382.56

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Solution

The fourth proportional to 115,905.44, 173,916.48 and 86,382.56 is: 129,617.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,905.44 : 173,916.48 = 86,382.56 : x
  2. Step 2: Convert to fraction form
    115,905.44/173,916.48 = 86,382.56/x
  3. Step 3: Cross multiply
    115,905.44x = 173,916.48 × 86,382.56
  4. Step 4: Simplify right side
    115,905.44x = 15,023,350,768.59
  5. Step 5: Solve for x
    x = 15,023,350,768.59/115,905.44
  6. Step 6: Final answer
    x = 129,617.31

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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.