Home / 159,305.12-219,846.92-87,688.16

Finding the Fourth Proportional to 159,305.12, 219,846.92 and 87,688.16

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Solution

The fourth proportional to 159,305.12, 219,846.92 and 87,688.16 is: 121,012.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,305.12 : 219,846.92 = 87,688.16 : x
  2. Step 2: Convert to fraction form
    159,305.12/219,846.92 = 87,688.16/x
  3. Step 3: Cross multiply
    159,305.12x = 219,846.92 × 87,688.16
  4. Step 4: Simplify right side
    159,305.12x = 19,277,970,358.79
  5. Step 5: Solve for x
    x = 19,277,970,358.79/159,305.12
  6. Step 6: Final answer
    x = 121,012.88

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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.