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Finding the Fourth Proportional to 136,228.60, 204,342.90 and 98,612.20

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Solution

The fourth proportional to 136,228.60, 204,342.90 and 98,612.20 is: 147,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,228.60 : 204,342.90 = 98,612.20 : x
  2. Step 2: Convert to fraction form
    136,228.60/204,342.90 = 98,612.20/x
  3. Step 3: Cross multiply
    136,228.60x = 204,342.90 × 98,612.20
  4. Step 4: Simplify right side
    136,228.60x = 20,150,702,923.38
  5. Step 5: Solve for x
    x = 20,150,702,923.38/136,228.60
  6. Step 6: Final answer
    x = 147,918.30

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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.