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Finding the Fourth Proportional to 135,648.40, 203,472.60 and 115,603.60

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Solution

The fourth proportional to 135,648.40, 203,472.60 and 115,603.60 is: 173,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,648.40 : 203,472.60 = 115,603.60 : x
  2. Step 2: Convert to fraction form
    135,648.40/203,472.60 = 115,603.60/x
  3. Step 3: Cross multiply
    135,648.40x = 203,472.60 × 115,603.60
  4. Step 4: Simplify right side
    135,648.40x = 23,522,165,061.36
  5. Step 5: Solve for x
    x = 23,522,165,061.36/135,648.40
  6. Step 6: Final answer
    x = 173,405.40

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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.