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Finding the Fourth Proportional to 119,651.09, 165,119.61 and 65,938.03

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Solution

The fourth proportional to 119,651.09, 165,119.61 and 65,938.03 is: 90,995.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,651.09 : 165,119.61 = 65,938.03 : x
  2. Step 2: Convert to fraction form
    119,651.09/165,119.61 = 65,938.03/x
  3. Step 3: Cross multiply
    119,651.09x = 165,119.61 × 65,938.03
  4. Step 4: Simplify right side
    119,651.09x = 10,887,660,642.48
  5. Step 5: Solve for x
    x = 10,887,660,642.48/119,651.09
  6. Step 6: Final answer
    x = 90,995.08

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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.