Home / 127,997.31-176,435.16-87,641.29

Finding the Fourth Proportional to 127,997.31, 176,435.16 and 87,641.29

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Solution

The fourth proportional to 127,997.31, 176,435.16 and 87,641.29 is: 120,807.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,997.31 : 176,435.16 = 87,641.29 : x
  2. Step 2: Convert to fraction form
    127,997.31/176,435.16 = 87,641.29/x
  3. Step 3: Cross multiply
    127,997.31x = 176,435.16 × 87,641.29
  4. Step 4: Simplify right side
    127,997.31x = 15,463,005,408.63
  5. Step 5: Solve for x
    x = 15,463,005,408.63/127,997.31
  6. Step 6: Final answer
    x = 120,807.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.