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Finding the Fourth Proportional to 129,347.40, 193,787.60 and 54,333.30

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Solution

The fourth proportional to 129,347.40, 193,787.60 and 54,333.30 is: 81,401.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,347.40 : 193,787.60 = 54,333.30 : x
  2. Step 2: Convert to fraction form
    129,347.40/193,787.60 = 54,333.30/x
  3. Step 3: Cross multiply
    129,347.40x = 193,787.60 × 54,333.30
  4. Step 4: Simplify right side
    129,347.40x = 10,529,119,807.08
  5. Step 5: Solve for x
    x = 10,529,119,807.08/129,347.40
  6. Step 6: Final answer
    x = 81,401.87

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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.