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Finding the Fourth Proportional to 119,516.66, 165,081.10 and 86,758.79

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Solution

The fourth proportional to 119,516.66, 165,081.10 and 86,758.79 is: 119,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,516.66 : 165,081.10 = 86,758.79 : x
  2. Step 2: Convert to fraction form
    119,516.66/165,081.10 = 86,758.79/x
  3. Step 3: Cross multiply
    119,516.66x = 165,081.10 × 86,758.79
  4. Step 4: Simplify right side
    119,516.66x = 14,322,236,625.36
  5. Step 5: Solve for x
    x = 14,322,236,625.36/119,516.66
  6. Step 6: Final answer
    x = 119,834.65

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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.