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Finding the Fourth Proportional to 119,687.67, 165,165.08 and 65,971.71

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Solution

The fourth proportional to 119,687.67, 165,165.08 and 65,971.71 is: 91,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,687.67 : 165,165.08 = 65,971.71 : x
  2. Step 2: Convert to fraction form
    119,687.67/165,165.08 = 65,971.71/x
  3. Step 3: Cross multiply
    119,687.67x = 165,165.08 × 65,971.71
  4. Step 4: Simplify right side
    119,687.67x = 10,896,222,430.03
  5. Step 5: Solve for x
    x = 10,896,222,430.03/119,687.67
  6. Step 6: Final answer
    x = 91,038.80

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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.