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Finding the Fourth Proportional to 119,494.62, 164,905.47 and 65,781.36

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Solution

The fourth proportional to 119,494.62, 164,905.47 and 65,781.36 is: 90,779.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,494.62 : 164,905.47 = 65,781.36 : x
  2. Step 2: Convert to fraction form
    119,494.62/164,905.47 = 65,781.36/x
  3. Step 3: Cross multiply
    119,494.62x = 164,905.47 × 65,781.36
  4. Step 4: Simplify right side
    119,494.62x = 10,847,706,088.04
  5. Step 5: Solve for x
    x = 10,847,706,088.04/119,494.62
  6. Step 6: Final answer
    x = 90,779.87

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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.