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Finding the Fourth Proportional to 119,833.59, 165,370.89 and 66,118.58

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Solution

The fourth proportional to 119,833.59, 165,370.89 and 66,118.58 is: 91,243.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,833.59 : 165,370.89 = 66,118.58 : x
  2. Step 2: Convert to fraction form
    119,833.59/165,370.89 = 66,118.58/x
  3. Step 3: Cross multiply
    119,833.59x = 165,370.89 × 66,118.58
  4. Step 4: Simplify right side
    119,833.59x = 10,934,088,420.14
  5. Step 5: Solve for x
    x = 10,934,088,420.14/119,833.59
  6. Step 6: Final answer
    x = 91,243.94

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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.