Home / 159,078.86-219,530.30-87,459.38

Finding the Fourth Proportional to 159,078.86, 219,530.30 and 87,459.38

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Solution

The fourth proportional to 159,078.86, 219,530.30 and 87,459.38 is: 120,694.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,078.86 : 219,530.30 = 87,459.38 : x
  2. Step 2: Convert to fraction form
    159,078.86/219,530.30 = 87,459.38/x
  3. Step 3: Cross multiply
    159,078.86x = 219,530.30 × 87,459.38
  4. Step 4: Simplify right side
    159,078.86x = 19,199,982,394.27
  5. Step 5: Solve for x
    x = 19,199,982,394.27/159,078.86
  6. Step 6: Final answer
    x = 120,694.75

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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.