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Finding the Fourth Proportional to 119,165.92, 164,450.72 and 65,455.76

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Solution

The fourth proportional to 119,165.92, 164,450.72 and 65,455.76 is: 90,329.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,165.92 : 164,450.72 = 65,455.76 : x
  2. Step 2: Convert to fraction form
    119,165.92/164,450.72 = 65,455.76/x
  3. Step 3: Cross multiply
    119,165.92x = 164,450.72 × 65,455.76
  4. Step 4: Simplify right side
    119,165.92x = 10,764,246,860.15
  5. Step 5: Solve for x
    x = 10,764,246,860.15/119,165.92
  6. Step 6: Final answer
    x = 90,329.91

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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.