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Finding the Fourth Proportional to 159,378.63, 219,940.83 and 87,757.17

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Solution

The fourth proportional to 159,378.63, 219,940.83 and 87,757.17 is: 121,103.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,378.63 : 219,940.83 = 87,757.17 : x
  2. Step 2: Convert to fraction form
    159,378.63/219,940.83 = 87,757.17/x
  3. Step 3: Cross multiply
    159,378.63x = 219,940.83 × 87,757.17
  4. Step 4: Simplify right side
    159,378.63x = 19,301,384,808.25
  5. Step 5: Solve for x
    x = 19,301,384,808.25/159,378.63
  6. Step 6: Final answer
    x = 121,103.97

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1.5x scale

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.