Home / 119,891.23-165,438.07-66,172.75

Finding the Fourth Proportional to 119,891.23, 165,438.07 and 66,172.75

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Solution

The fourth proportional to 119,891.23, 165,438.07 and 66,172.75 is: 91,311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,891.23 : 165,438.07 = 66,172.75 : x
  2. Step 2: Convert to fraction form
    119,891.23/165,438.07 = 66,172.75/x
  3. Step 3: Cross multiply
    119,891.23x = 165,438.07 × 66,172.75
  4. Step 4: Simplify right side
    119,891.23x = 10,947,492,046.59
  5. Step 5: Solve for x
    x = 10,947,492,046.59/119,891.23
  6. Step 6: Final answer
    x = 91,311.87

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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.