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Finding the Fourth Proportional to 133,628.40, 200,442.60 and 124,815.60

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Solution

The fourth proportional to 133,628.40, 200,442.60 and 124,815.60 is: 187,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,628.40 : 200,442.60 = 124,815.60 : x
  2. Step 2: Convert to fraction form
    133,628.40/200,442.60 = 124,815.60/x
  3. Step 3: Cross multiply
    133,628.40x = 200,442.60 × 124,815.60
  4. Step 4: Simplify right side
    133,628.40x = 25,018,363,384.56
  5. Step 5: Solve for x
    x = 25,018,363,384.56/133,628.40
  6. Step 6: Final answer
    x = 187,223.40

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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.