Home / 87,144.15-120,284.69-51,345.74

Finding the Fourth Proportional to 87,144.15, 120,284.69 and 51,345.74

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Solution

The fourth proportional to 87,144.15, 120,284.69 and 51,345.74 is: 70,872.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,144.15 : 120,284.69 = 51,345.74 : x
  2. Step 2: Convert to fraction form
    87,144.15/120,284.69 = 51,345.74/x
  3. Step 3: Cross multiply
    87,144.15x = 120,284.69 × 51,345.74
  4. Step 4: Simplify right side
    87,144.15x = 6,176,105,560.57
  5. Step 5: Solve for x
    x = 6,176,105,560.57/87,144.15
  6. Step 6: Final answer
    x = 70,872.29

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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.