Home / 198,116.10-297,219.48-85,815.01

Finding the Fourth Proportional to 198,116.10, 297,219.48 and 85,815.01

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Solution

The fourth proportional to 198,116.10, 297,219.48 and 85,815.01 is: 128,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,116.10 : 297,219.48 = 85,815.01 : x
  2. Step 2: Convert to fraction form
    198,116.10/297,219.48 = 85,815.01/x
  3. Step 3: Cross multiply
    198,116.10x = 297,219.48 × 85,815.01
  4. Step 4: Simplify right side
    198,116.10x = 25,505,892,648.39
  5. Step 5: Solve for x
    x = 25,505,892,648.39/198,116.10
  6. Step 6: Final answer
    x = 128,742.15

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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.