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Finding the Fourth Proportional to 103,129.20, 154,672.20 and 50,576.40

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Solution

The fourth proportional to 103,129.20, 154,672.20 and 50,576.40 is: 75,854.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,129.20 : 154,672.20 = 50,576.40 : x
  2. Step 2: Convert to fraction form
    103,129.20/154,672.20 = 50,576.40/x
  3. Step 3: Cross multiply
    103,129.20x = 154,672.20 × 50,576.40
  4. Step 4: Simplify right side
    103,129.20x = 7,822,763,056.08
  5. Step 5: Solve for x
    x = 7,822,763,056.08/103,129.20
  6. Step 6: Final answer
    x = 75,854.01

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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.