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Finding the Fourth Proportional to 129,700.78, 194,571.36 and 54,821.22

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Solution

The fourth proportional to 129,700.78, 194,571.36 and 54,821.22 is: 82,240.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,700.78 : 194,571.36 = 54,821.22 : x
  2. Step 2: Convert to fraction form
    129,700.78/194,571.36 = 54,821.22/x
  3. Step 3: Cross multiply
    129,700.78x = 194,571.36 × 54,821.22
  4. Step 4: Simplify right side
    129,700.78x = 10,666,639,332.26
  5. Step 5: Solve for x
    x = 10,666,639,332.26/129,700.78
  6. Step 6: Final answer
    x = 82,240.36

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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.