Home / 119,890.23-165,436.70-66,171.75

Finding the Fourth Proportional to 119,890.23, 165,436.70 and 66,171.75

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Solution

The fourth proportional to 119,890.23, 165,436.70 and 66,171.75 is: 91,310.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,890.23 : 165,436.70 = 66,171.75 : x
  2. Step 2: Convert to fraction form
    119,890.23/165,436.70 = 66,171.75/x
  3. Step 3: Cross multiply
    119,890.23x = 165,436.70 × 66,171.75
  4. Step 4: Simplify right side
    119,890.23x = 10,947,235,932.56
  5. Step 5: Solve for x
    x = 10,947,235,932.56/119,890.23
  6. Step 6: Final answer
    x = 91,310.50

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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.