Home / 211,502.87-317,180.39-85,110.32

Finding the Fourth Proportional to 211,502.87, 317,180.39 and 85,110.32

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Solution

The fourth proportional to 211,502.87, 317,180.39 and 85,110.32 is: 127,635.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,502.87 : 317,180.39 = 85,110.32 : x
  2. Step 2: Convert to fraction form
    211,502.87/317,180.39 = 85,110.32/x
  3. Step 3: Cross multiply
    211,502.87x = 317,180.39 × 85,110.32
  4. Step 4: Simplify right side
    211,502.87x = 26,995,324,490.62
  5. Step 5: Solve for x
    x = 26,995,324,490.62/211,502.87
  6. Step 6: Final answer
    x = 127,635.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.