Home / 87,195.64-120,328.84-51,387.16

Finding the Fourth Proportional to 87,195.64, 120,328.84 and 51,387.16

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Solution

The fourth proportional to 87,195.64, 120,328.84 and 51,387.16 is: 70,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,195.64 : 120,328.84 = 51,387.16 : x
  2. Step 2: Convert to fraction form
    87,195.64/120,328.84 = 51,387.16/x
  3. Step 3: Cross multiply
    87,195.64x = 120,328.84 × 51,387.16
  4. Step 4: Simplify right side
    87,195.64x = 6,183,357,353.69
  5. Step 5: Solve for x
    x = 6,183,357,353.69/87,195.64
  6. Step 6: Final answer
    x = 70,913.61

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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.