Home / 117,238.62-161,700-100,913.61

Finding the Fourth Proportional to 117,238.62, 161,700 and 100,913.61

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Solution

The fourth proportional to 117,238.62, 161,700 and 100,913.61 is: 139,183.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,238.62 : 161,700 = 100,913.61 : x
  2. Step 2: Convert to fraction form
    117,238.62/161,700 = 100,913.61/x
  3. Step 3: Cross multiply
    117,238.62x = 161,700 × 100,913.61
  4. Step 4: Simplify right side
    117,238.62x = 16,317,730,737
  5. Step 5: Solve for x
    x = 16,317,730,737/117,238.62
  6. Step 6: Final answer
    x = 139,183.92

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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.