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Finding the Fourth Proportional to 199,454.40, 299,181.60 and 81,210.60

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Solution

The fourth proportional to 199,454.40, 299,181.60 and 81,210.60 is: 121,815.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,454.40 : 299,181.60 = 81,210.60 : x
  2. Step 2: Convert to fraction form
    199,454.40/299,181.60 = 81,210.60/x
  3. Step 3: Cross multiply
    199,454.40x = 299,181.60 × 81,210.60
  4. Step 4: Simplify right side
    199,454.40x = 24,296,717,244.96
  5. Step 5: Solve for x
    x = 24,296,717,244.96/199,454.40
  6. Step 6: Final answer
    x = 121,815.90

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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.