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Finding the Fourth Proportional to 133,603.40, 200,405.10 and 124,790.60

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Solution

The fourth proportional to 133,603.40, 200,405.10 and 124,790.60 is: 187,185.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,603.40 : 200,405.10 = 124,790.60 : x
  2. Step 2: Convert to fraction form
    133,603.40/200,405.10 = 124,790.60/x
  3. Step 3: Cross multiply
    133,603.40x = 200,405.10 × 124,790.60
  4. Step 4: Simplify right side
    133,603.40x = 25,008,672,672.06
  5. Step 5: Solve for x
    x = 25,008,672,672.06/133,603.40
  6. Step 6: Final answer
    x = 187,185.90

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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.