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Finding the Fourth Proportional to 119,907.82, 165,477 and 66,194.83

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Solution

The fourth proportional to 119,907.82, 165,477 and 66,194.83 is: 91,351.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,907.82 : 165,477 = 66,194.83 : x
  2. Step 2: Convert to fraction form
    119,907.82/165,477 = 66,194.83/x
  3. Step 3: Cross multiply
    119,907.82x = 165,477 × 66,194.83
  4. Step 4: Simplify right side
    119,907.82x = 10,953,721,883.91
  5. Step 5: Solve for x
    x = 10,953,721,883.91/119,907.82
  6. Step 6: Final answer
    x = 91,351.19

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1.5x scale

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.