Home / 149,275.62-205,997.27-81,293.78

Finding the Fourth Proportional to 149,275.62, 205,997.27 and 81,293.78

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Solution

The fourth proportional to 149,275.62, 205,997.27 and 81,293.78 is: 112,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,275.62 : 205,997.27 = 81,293.78 : x
  2. Step 2: Convert to fraction form
    149,275.62/205,997.27 = 81,293.78/x
  3. Step 3: Cross multiply
    149,275.62x = 205,997.27 × 81,293.78
  4. Step 4: Simplify right side
    149,275.62x = 16,746,296,856.50
  5. Step 5: Solve for x
    x = 16,746,296,856.50/149,275.62
  6. Step 6: Final answer
    x = 112,183.74

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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.