Home / 87,155.94-120,279.15-51,347.46

Finding the Fourth Proportional to 87,155.94, 120,279.15 and 51,347.46

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Solution

The fourth proportional to 87,155.94, 120,279.15 and 51,347.46 is: 70,861.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,155.94 : 120,279.15 = 51,347.46 : x
  2. Step 2: Convert to fraction form
    87,155.94/120,279.15 = 51,347.46/x
  3. Step 3: Cross multiply
    87,155.94x = 120,279.15 × 51,347.46
  4. Step 4: Simplify right side
    87,155.94x = 6,176,028,843.46
  5. Step 5: Solve for x
    x = 6,176,028,843.46/87,155.94
  6. Step 6: Final answer
    x = 70,861.82

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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.