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Finding the Fourth Proportional to 136,419.20, 204,283.20 and 108,771.20

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Solution

The fourth proportional to 136,419.20, 204,283.20 and 108,771.20 is: 162,881.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,419.20 : 204,283.20 = 108,771.20 : x
  2. Step 2: Convert to fraction form
    136,419.20/204,283.20 = 108,771.20/x
  3. Step 3: Cross multiply
    136,419.20x = 204,283.20 × 108,771.20
  4. Step 4: Simplify right side
    136,419.20x = 22,220,128,803.84
  5. Step 5: Solve for x
    x = 22,220,128,803.84/136,419.20
  6. Step 6: Final answer
    x = 162,881.24

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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.