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Finding the Fourth Proportional to 119,690.03, 165,171.42 and 65,975.09

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Solution

The fourth proportional to 119,690.03, 165,171.42 and 65,975.09 is: 91,045.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,690.03 : 165,171.42 = 65,975.09 : x
  2. Step 2: Convert to fraction form
    119,690.03/165,171.42 = 65,975.09/x
  3. Step 3: Cross multiply
    119,690.03x = 165,171.42 × 65,975.09
  4. Step 4: Simplify right side
    119,690.03x = 10,897,199,299.93
  5. Step 5: Solve for x
    x = 10,897,199,299.93/119,690.03
  6. Step 6: Final answer
    x = 91,045.17

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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.