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Finding the Fourth Proportional to 116,774.70, 161,115.74 and 65,769.60

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Solution

The fourth proportional to 116,774.70, 161,115.74 and 65,769.60 is: 90,743.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,774.70 : 161,115.74 = 65,769.60 : x
  2. Step 2: Convert to fraction form
    116,774.70/161,115.74 = 65,769.60/x
  3. Step 3: Cross multiply
    116,774.70x = 161,115.74 × 65,769.60
  4. Step 4: Simplify right side
    116,774.70x = 10,596,517,444.66
  5. Step 5: Solve for x
    x = 10,596,517,444.66/116,774.70
  6. Step 6: Final answer
    x = 90,743.26

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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.