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Finding the Fourth Proportional to 129,672.06, 194,518.11 and 49,748.28

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Solution

The fourth proportional to 129,672.06, 194,518.11 and 49,748.28 is: 74,626.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,672.06 : 194,518.11 = 49,748.28 : x
  2. Step 2: Convert to fraction form
    129,672.06/194,518.11 = 49,748.28/x
  3. Step 3: Cross multiply
    129,672.06x = 194,518.11 × 49,748.28
  4. Step 4: Simplify right side
    129,672.06x = 9,676,941,401.35
  5. Step 5: Solve for x
    x = 9,676,941,401.35/129,672.06
  6. Step 6: Final answer
    x = 74,626.26

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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.