Home / 127,997.82-176,435.85-87,641.79

Finding the Fourth Proportional to 127,997.82, 176,435.85 and 87,641.79

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Solution

The fourth proportional to 127,997.82, 176,435.85 and 87,641.79 is: 120,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,997.82 : 176,435.85 = 87,641.79 : x
  2. Step 2: Convert to fraction form
    127,997.82/176,435.85 = 87,641.79/x
  3. Step 3: Cross multiply
    127,997.82x = 176,435.85 × 87,641.79
  4. Step 4: Simplify right side
    127,997.82x = 15,463,153,714.17
  5. Step 5: Solve for x
    x = 15,463,153,714.17/127,997.82
  6. Step 6: Final answer
    x = 120,807.95

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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.