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Finding the Fourth Proportional to 107,773.60, 161,660.40 and 80,946.40

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Solution

The fourth proportional to 107,773.60, 161,660.40 and 80,946.40 is: 121,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,773.60 : 161,660.40 = 80,946.40 : x
  2. Step 2: Convert to fraction form
    107,773.60/161,660.40 = 80,946.40/x
  3. Step 3: Cross multiply
    107,773.60x = 161,660.40 × 80,946.40
  4. Step 4: Simplify right side
    107,773.60x = 13,085,827,402.56
  5. Step 5: Solve for x
    x = 13,085,827,402.56/107,773.60
  6. Step 6: Final answer
    x = 121,419.60

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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.