Home / 199,435.40-299,153.10-81,191.60

Finding the Fourth Proportional to 199,435.40, 299,153.10 and 81,191.60

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Solution

The fourth proportional to 199,435.40, 299,153.10 and 81,191.60 is: 121,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,435.40 : 299,153.10 = 81,191.60 : x
  2. Step 2: Convert to fraction form
    199,435.40/299,153.10 = 81,191.60/x
  3. Step 3: Cross multiply
    199,435.40x = 299,153.10 × 81,191.60
  4. Step 4: Simplify right side
    199,435.40x = 24,288,718,833.96
  5. Step 5: Solve for x
    x = 24,288,718,833.96/199,435.40
  6. Step 6: Final answer
    x = 121,787.40

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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.