Home / 159,081.92-219,533.28-87,463.20

Finding the Fourth Proportional to 159,081.92, 219,533.28 and 87,463.20

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Solution

The fourth proportional to 159,081.92, 219,533.28 and 87,463.20 is: 120,699.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,081.92 : 219,533.28 = 87,463.20 : x
  2. Step 2: Convert to fraction form
    159,081.92/219,533.28 = 87,463.20/x
  3. Step 3: Cross multiply
    159,081.92x = 219,533.28 × 87,463.20
  4. Step 4: Simplify right side
    159,081.92x = 19,201,083,175.30
  5. Step 5: Solve for x
    x = 19,201,083,175.30/159,081.92
  6. Step 6: Final answer
    x = 120,699.34

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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.