Home / 165,621.36-248,389.32-76,787.76

Finding the Fourth Proportional to 165,621.36, 248,389.32 and 76,787.76

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Solution

The fourth proportional to 165,621.36, 248,389.32 and 76,787.76 is: 115,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,621.36 : 248,389.32 = 76,787.76 : x
  2. Step 2: Convert to fraction form
    165,621.36/248,389.32 = 76,787.76/x
  3. Step 3: Cross multiply
    165,621.36x = 248,389.32 × 76,787.76
  4. Step 4: Simplify right side
    165,621.36x = 19,073,259,490.72
  5. Step 5: Solve for x
    x = 19,073,259,490.72/165,621.36
  6. Step 6: Final answer
    x = 115,161.83

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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.