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Finding the Fourth Proportional to 119,930.01, 165,509.90 and 66,214.86

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Solution

The fourth proportional to 119,930.01, 165,509.90 and 66,214.86 is: 91,380.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,930.01 : 165,509.90 = 66,214.86 : x
  2. Step 2: Convert to fraction form
    119,930.01/165,509.90 = 66,214.86/x
  3. Step 3: Cross multiply
    119,930.01x = 165,509.90 × 66,214.86
  4. Step 4: Simplify right side
    119,930.01x = 10,959,214,857.11
  5. Step 5: Solve for x
    x = 10,959,214,857.11/119,930.01
  6. Step 6: Final answer
    x = 91,380.09

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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.