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Finding the Fourth Proportional to 119,379.81, 164,744.24 and 69,078.81

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Solution

The fourth proportional to 119,379.81, 164,744.24 and 69,078.81 is: 95,328.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,379.81 : 164,744.24 = 69,078.81 : x
  2. Step 2: Convert to fraction form
    119,379.81/164,744.24 = 69,078.81/x
  3. Step 3: Cross multiply
    119,379.81x = 164,744.24 × 69,078.81
  4. Step 4: Simplify right side
    119,379.81x = 11,380,336,053.55
  5. Step 5: Solve for x
    x = 11,380,336,053.55/119,379.81
  6. Step 6: Final answer
    x = 95,328.82

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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.