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Finding the Fourth Proportional to 161,358.78, 222,671.95 and 89,737.27

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Solution

The fourth proportional to 161,358.78, 222,671.95 and 89,737.27 is: 123,835.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,358.78 : 222,671.95 = 89,737.27 : x
  2. Step 2: Convert to fraction form
    161,358.78/222,671.95 = 89,737.27/x
  3. Step 3: Cross multiply
    161,358.78x = 222,671.95 × 89,737.27
  4. Step 4: Simplify right side
    161,358.78x = 19,981,972,898.58
  5. Step 5: Solve for x
    x = 19,981,972,898.58/161,358.78
  6. Step 6: Final answer
    x = 123,835.67

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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.