Home / 119,857.12-165,400.08-66,147.20

Finding the Fourth Proportional to 119,857.12, 165,400.08 and 66,147.20

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Solution

The fourth proportional to 119,857.12, 165,400.08 and 66,147.20 is: 91,281.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,857.12 : 165,400.08 = 66,147.20 : x
  2. Step 2: Convert to fraction form
    119,857.12/165,400.08 = 66,147.20/x
  3. Step 3: Cross multiply
    119,857.12x = 165,400.08 × 66,147.20
  4. Step 4: Simplify right side
    119,857.12x = 10,940,752,171.78
  5. Step 5: Solve for x
    x = 10,940,752,171.78/119,857.12
  6. Step 6: Final answer
    x = 91,281.62

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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.