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Finding the Fourth Proportional to 135,943.40, 203,915.10 and 36,103.40

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Solution

The fourth proportional to 135,943.40, 203,915.10 and 36,103.40 is: 54,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,943.40 : 203,915.10 = 36,103.40 : x
  2. Step 2: Convert to fraction form
    135,943.40/203,915.10 = 36,103.40/x
  3. Step 3: Cross multiply
    135,943.40x = 203,915.10 × 36,103.40
  4. Step 4: Simplify right side
    135,943.40x = 7,362,028,421.34
  5. Step 5: Solve for x
    x = 7,362,028,421.34/135,943.40
  6. Step 6: Final answer
    x = 54,155.10

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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.