Home / 100,814.31-139,124.25-55,496.85

Finding the Fourth Proportional to 100,814.31, 139,124.25 and 55,496.85

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Solution

The fourth proportional to 100,814.31, 139,124.25 and 55,496.85 is: 76,585.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,814.31 : 139,124.25 = 55,496.85 : x
  2. Step 2: Convert to fraction form
    100,814.31/139,124.25 = 55,496.85/x
  3. Step 3: Cross multiply
    100,814.31x = 139,124.25 × 55,496.85
  4. Step 4: Simplify right side
    100,814.31x = 7,720,957,633.61
  5. Step 5: Solve for x
    x = 7,720,957,633.61/100,814.31
  6. Step 6: Final answer
    x = 76,585.93

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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.