Home / 217,319.68-325,899.36-75,128.96

Finding the Fourth Proportional to 217,319.68, 325,899.36 and 75,128.96

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Solution

The fourth proportional to 217,319.68, 325,899.36 and 75,128.96 is: 112,665.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,319.68 : 325,899.36 = 75,128.96 : x
  2. Step 2: Convert to fraction form
    217,319.68/325,899.36 = 75,128.96/x
  3. Step 3: Cross multiply
    217,319.68x = 325,899.36 × 75,128.96
  4. Step 4: Simplify right side
    217,319.68x = 24,484,479,981.47
  5. Step 5: Solve for x
    x = 24,484,479,981.47/217,319.68
  6. Step 6: Final answer
    x = 112,665.73

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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.