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Finding the Fourth Proportional to 129,755.40, 194,633.10 and 124,571.40

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Solution

The fourth proportional to 129,755.40, 194,633.10 and 124,571.40 is: 186,857.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,755.40 : 194,633.10 = 124,571.40 : x
  2. Step 2: Convert to fraction form
    129,755.40/194,633.10 = 124,571.40/x
  3. Step 3: Cross multiply
    129,755.40x = 194,633.10 × 124,571.40
  4. Step 4: Simplify right side
    129,755.40x = 24,245,717,753.34
  5. Step 5: Solve for x
    x = 24,245,717,753.34/129,755.40
  6. Step 6: Final answer
    x = 186,857.10

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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.