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Finding the Fourth Proportional to 107,486.80, 161,172.60 and 45,086.80

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Solution

The fourth proportional to 107,486.80, 161,172.60 and 45,086.80 is: 67,606.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,486.80 : 161,172.60 = 45,086.80 : x
  2. Step 2: Convert to fraction form
    107,486.80/161,172.60 = 45,086.80/x
  3. Step 3: Cross multiply
    107,486.80x = 161,172.60 × 45,086.80
  4. Step 4: Simplify right side
    107,486.80x = 7,266,756,781.68
  5. Step 5: Solve for x
    x = 7,266,756,781.68/107,486.80
  6. Step 6: Final answer
    x = 67,606.04

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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.