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Finding the Fourth Proportional to 119,707.79, 165,198.58 and 65,259.99

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Solution

The fourth proportional to 119,707.79, 165,198.58 and 65,259.99 is: 90,059.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,707.79 : 165,198.58 = 65,259.99 : x
  2. Step 2: Convert to fraction form
    119,707.79/165,198.58 = 65,259.99/x
  3. Step 3: Cross multiply
    119,707.79x = 165,198.58 × 65,259.99
  4. Step 4: Simplify right side
    119,707.79x = 10,780,857,515.66
  5. Step 5: Solve for x
    x = 10,780,857,515.66/119,707.79
  6. Step 6: Final answer
    x = 90,059.79

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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.