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Finding the Fourth Proportional to 202,128.60, 303,168.60 and 83,787.60

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Solution

The fourth proportional to 202,128.60, 303,168.60 and 83,787.60 is: 125,671.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,128.60 : 303,168.60 = 83,787.60 : x
  2. Step 2: Convert to fraction form
    202,128.60/303,168.60 = 83,787.60/x
  3. Step 3: Cross multiply
    202,128.60x = 303,168.60 × 83,787.60
  4. Step 4: Simplify right side
    202,128.60x = 25,401,769,389.36
  5. Step 5: Solve for x
    x = 25,401,769,389.36/202,128.60
  6. Step 6: Final answer
    x = 125,671.33

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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.