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Finding the Fourth Proportional to 142,734.40, 214,101.60 and 136,173.40

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Solution

The fourth proportional to 142,734.40, 214,101.60 and 136,173.40 is: 204,260.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,734.40 : 214,101.60 = 136,173.40 : x
  2. Step 2: Convert to fraction form
    142,734.40/214,101.60 = 136,173.40/x
  3. Step 3: Cross multiply
    142,734.40x = 214,101.60 × 136,173.40
  4. Step 4: Simplify right side
    142,734.40x = 29,154,942,817.44
  5. Step 5: Solve for x
    x = 29,154,942,817.44/142,734.40
  6. Step 6: Final answer
    x = 204,260.10

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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.