Home / 159,330.72-219,874.68-87,709.20

Finding the Fourth Proportional to 159,330.72, 219,874.68 and 87,709.20

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Solution

The fourth proportional to 159,330.72, 219,874.68 and 87,709.20 is: 121,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,330.72 : 219,874.68 = 87,709.20 : x
  2. Step 2: Convert to fraction form
    159,330.72/219,874.68 = 87,709.20/x
  3. Step 3: Cross multiply
    159,330.72x = 219,874.68 × 87,709.20
  4. Step 4: Simplify right side
    159,330.72x = 19,285,032,283.06
  5. Step 5: Solve for x
    x = 19,285,032,283.06/159,330.72
  6. Step 6: Final answer
    x = 121,037.75

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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.