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Finding the Fourth Proportional to 119,379.29, 164,739.42 and 65,663.87

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Solution

The fourth proportional to 119,379.29, 164,739.42 and 65,663.87 is: 90,613.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,379.29 : 164,739.42 = 65,663.87 : x
  2. Step 2: Convert to fraction form
    119,379.29/164,739.42 = 65,663.87/x
  3. Step 3: Cross multiply
    119,379.29x = 164,739.42 × 65,663.87
  4. Step 4: Simplify right side
    119,379.29x = 10,817,427,035.06
  5. Step 5: Solve for x
    x = 10,817,427,035.06/119,379.29
  6. Step 6: Final answer
    x = 90,613.94

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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.