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Finding the Fourth Proportional to 199,406.48, 299,166.26 and 81,162.68

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Solution

The fourth proportional to 199,406.48, 299,166.26 and 81,162.68 is: 121,767.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,406.48 : 299,166.26 = 81,162.68 : x
  2. Step 2: Convert to fraction form
    199,406.48/299,166.26 = 81,162.68/x
  3. Step 3: Cross multiply
    199,406.48x = 299,166.26 × 81,162.68
  4. Step 4: Simplify right side
    199,406.48x = 24,281,135,427.18
  5. Step 5: Solve for x
    x = 24,281,135,427.18/199,406.48
  6. Step 6: Final answer
    x = 121,767.03

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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.