Home / 116,958.72-161,219.52-102,787.20

Finding the Fourth Proportional to 116,958.72, 161,219.52 and 102,787.20

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Solution

The fourth proportional to 116,958.72, 161,219.52 and 102,787.20 is: 141,685.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,958.72 : 161,219.52 = 102,787.20 : x
  2. Step 2: Convert to fraction form
    116,958.72/161,219.52 = 102,787.20/x
  3. Step 3: Cross multiply
    116,958.72x = 161,219.52 × 102,787.20
  4. Step 4: Simplify right side
    116,958.72x = 16,571,303,046.14
  5. Step 5: Solve for x
    x = 16,571,303,046.14/116,958.72
  6. Step 6: Final answer
    x = 141,685.06

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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.