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Finding the Fourth Proportional to 84,914.60, 127,355.54 and 80,699.88

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Solution

The fourth proportional to 84,914.60, 127,355.54 and 80,699.88 is: 121,034.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,914.60 : 127,355.54 = 80,699.88 : x
  2. Step 2: Convert to fraction form
    84,914.60/127,355.54 = 80,699.88/x
  3. Step 3: Cross multiply
    84,914.60x = 127,355.54 × 80,699.88
  4. Step 4: Simplify right side
    84,914.60x = 10,277,576,795.34
  5. Step 5: Solve for x
    x = 10,277,576,795.34/84,914.60
  6. Step 6: Final answer
    x = 121,034.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.