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Finding the Fourth Proportional to 119,595.36, 165,040.80 and 65,879.16

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Solution

The fourth proportional to 119,595.36, 165,040.80 and 65,879.16 is: 90,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,595.36 : 165,040.80 = 65,879.16 : x
  2. Step 2: Convert to fraction form
    119,595.36/165,040.80 = 65,879.16/x
  3. Step 3: Cross multiply
    119,595.36x = 165,040.80 × 65,879.16
  4. Step 4: Simplify right side
    119,595.36x = 10,872,749,269.73
  5. Step 5: Solve for x
    x = 10,872,749,269.73/119,595.36
  6. Step 6: Final answer
    x = 90,912.80

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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.