Home / 87,192.72-120,299.45-51,369.66

Finding the Fourth Proportional to 87,192.72, 120,299.45 and 51,369.66

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Solution

The fourth proportional to 87,192.72, 120,299.45 and 51,369.66 is: 70,874.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,192.72 : 120,299.45 = 51,369.66 : x
  2. Step 2: Convert to fraction form
    87,192.72/120,299.45 = 51,369.66/x
  3. Step 3: Cross multiply
    87,192.72x = 120,299.45 × 51,369.66
  4. Step 4: Simplify right side
    87,192.72x = 6,179,741,587.84
  5. Step 5: Solve for x
    x = 6,179,741,587.84/87,192.72
  6. Step 6: Final answer
    x = 70,874.51

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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.