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Finding the Fourth Proportional to 119,866.65, 165,419.33 and 66,155.82

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Solution

The fourth proportional to 119,866.65, 165,419.33 and 66,155.82 is: 91,296.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,866.65 : 165,419.33 = 66,155.82 : x
  2. Step 2: Convert to fraction form
    119,866.65/165,419.33 = 66,155.82/x
  3. Step 3: Cross multiply
    119,866.65x = 165,419.33 × 66,155.82
  4. Step 4: Simplify right side
    119,866.65x = 10,943,451,089.22
  5. Step 5: Solve for x
    x = 10,943,451,089.22/119,866.65
  6. Step 6: Final answer
    x = 91,296.88

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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.