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Finding the Fourth Proportional to 119,894.78, 165,454.81 and 66,179.81

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Solution

The fourth proportional to 119,894.78, 165,454.81 and 66,179.81 is: 91,328.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,894.78 : 165,454.81 = 66,179.81 : x
  2. Step 2: Convert to fraction form
    119,894.78/165,454.81 = 66,179.81/x
  3. Step 3: Cross multiply
    119,894.78x = 165,454.81 × 66,179.81
  4. Step 4: Simplify right side
    119,894.78x = 10,949,767,889.39
  5. Step 5: Solve for x
    x = 10,949,767,889.39/119,894.78
  6. Step 6: Final answer
    x = 91,328.15

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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.