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Finding the Fourth Proportional to 129,810.80, 194,284.20 and 94,170.80

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Solution

The fourth proportional to 129,810.80, 194,284.20 and 94,170.80 is: 140,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,810.80 : 194,284.20 = 94,170.80 : x
  2. Step 2: Convert to fraction form
    129,810.80/194,284.20 = 94,170.80/x
  3. Step 3: Cross multiply
    129,810.80x = 194,284.20 × 94,170.80
  4. Step 4: Simplify right side
    129,810.80x = 18,295,898,541.36
  5. Step 5: Solve for x
    x = 18,295,898,541.36/129,810.80
  6. Step 6: Final answer
    x = 140,942.81

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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.