Home / 87,478.37-120,778.25-67,299.65

Finding the Fourth Proportional to 87,478.37, 120,778.25 and 67,299.65

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Solution

The fourth proportional to 87,478.37, 120,778.25 and 67,299.65 is: 92,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.37 : 120,778.25 = 67,299.65 : x
  2. Step 2: Convert to fraction form
    87,478.37/120,778.25 = 67,299.65/x
  3. Step 3: Cross multiply
    87,478.37x = 120,778.25 × 67,299.65
  4. Step 4: Simplify right side
    87,478.37x = 8,128,333,952.61
  5. Step 5: Solve for x
    x = 8,128,333,952.61/87,478.37
  6. Step 6: Final answer
    x = 92,918.21

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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.