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Finding the Fourth Proportional to 159,576.78, 220,217.49 and 87,959.58

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Solution

The fourth proportional to 159,576.78, 220,217.49 and 87,959.58 is: 121,385.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,576.78 : 220,217.49 = 87,959.58 : x
  2. Step 2: Convert to fraction form
    159,576.78/220,217.49 = 87,959.58/x
  3. Step 3: Cross multiply
    159,576.78x = 220,217.49 × 87,959.58
  4. Step 4: Simplify right side
    159,576.78x = 19,370,237,929.05
  5. Step 5: Solve for x
    x = 19,370,237,929.05/159,576.78
  6. Step 6: Final answer
    x = 121,385.07

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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.