Home / 159,138.08-219,606.17-87,518.10

Finding the Fourth Proportional to 159,138.08, 219,606.17 and 87,518.10

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Solution

The fourth proportional to 159,138.08, 219,606.17 and 87,518.10 is: 120,772.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,138.08 : 219,606.17 = 87,518.10 : x
  2. Step 2: Convert to fraction form
    159,138.08/219,606.17 = 87,518.10/x
  3. Step 3: Cross multiply
    159,138.08x = 219,606.17 × 87,518.10
  4. Step 4: Simplify right side
    159,138.08x = 19,219,514,309.09
  5. Step 5: Solve for x
    x = 19,219,514,309.09/159,138.08
  6. Step 6: Final answer
    x = 120,772.57

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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.