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Finding the Fourth Proportional to 119,861.62, 165,404.71 and 66,145.49

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Solution

The fourth proportional to 119,861.62, 165,404.71 and 66,145.49 is: 91,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,861.62 : 165,404.71 = 66,145.49 : x
  2. Step 2: Convert to fraction form
    119,861.62/165,404.71 = 66,145.49/x
  3. Step 3: Cross multiply
    119,861.62x = 165,404.71 × 66,145.49
  4. Step 4: Simplify right side
    119,861.62x = 10,940,774,815.95
  5. Step 5: Solve for x
    x = 10,940,774,815.95/119,861.62
  6. Step 6: Final answer
    x = 91,278.38

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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.