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Finding the Fourth Proportional to 169,989.60, 254,984.40 and 76,677.60

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Solution

The fourth proportional to 169,989.60, 254,984.40 and 76,677.60 is: 115,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,989.60 : 254,984.40 = 76,677.60 : x
  2. Step 2: Convert to fraction form
    169,989.60/254,984.40 = 76,677.60/x
  3. Step 3: Cross multiply
    169,989.60x = 254,984.40 × 76,677.60
  4. Step 4: Simplify right side
    169,989.60x = 19,551,591,829.44
  5. Step 5: Solve for x
    x = 19,551,591,829.44/169,989.60
  6. Step 6: Final answer
    x = 115,016.40

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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.