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Finding the Fourth Proportional to 129,791.60, 194,752.20 and 73,674.80

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Solution

The fourth proportional to 129,791.60, 194,752.20 and 73,674.80 is: 110,548.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,791.60 : 194,752.20 = 73,674.80 : x
  2. Step 2: Convert to fraction form
    129,791.60/194,752.20 = 73,674.80/x
  3. Step 3: Cross multiply
    129,791.60x = 194,752.20 × 73,674.80
  4. Step 4: Simplify right side
    129,791.60x = 14,348,329,384.56
  5. Step 5: Solve for x
    x = 14,348,329,384.56/129,791.60
  6. Step 6: Final answer
    x = 110,548.98

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1.5x scale

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.