Home / 87,730.34-120,958.15-73,215.42

Finding the Fourth Proportional to 87,730.34, 120,958.15 and 73,215.42

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Solution

The fourth proportional to 87,730.34, 120,958.15 and 73,215.42 is: 100,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,730.34 : 120,958.15 = 73,215.42 : x
  2. Step 2: Convert to fraction form
    87,730.34/120,958.15 = 73,215.42/x
  3. Step 3: Cross multiply
    87,730.34x = 120,958.15 × 73,215.42
  4. Step 4: Simplify right side
    87,730.34x = 8,856,001,754.67
  5. Step 5: Solve for x
    x = 8,856,001,754.67/87,730.34
  6. Step 6: Final answer
    x = 100,945.71

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1.5x scale

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.