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Finding the Fourth Proportional to 199,491.30, 299,250.45 and 81,164.70

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Solution

The fourth proportional to 199,491.30, 299,250.45 and 81,164.70 is: 121,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,491.30 : 299,250.45 = 81,164.70 : x
  2. Step 2: Convert to fraction form
    199,491.30/299,250.45 = 81,164.70/x
  3. Step 3: Cross multiply
    199,491.30x = 299,250.45 × 81,164.70
  4. Step 4: Simplify right side
    199,491.30x = 24,288,572,999.12
  5. Step 5: Solve for x
    x = 24,288,572,999.12/199,491.30
  6. Step 6: Final answer
    x = 121,752.54

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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.