Home / 204,435.30-306,543.60-85,972.80

Finding the Fourth Proportional to 204,435.30, 306,543.60 and 85,972.80

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Solution

The fourth proportional to 204,435.30, 306,543.60 and 85,972.80 is: 128,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,435.30 : 306,543.60 = 85,972.80 : x
  2. Step 2: Convert to fraction form
    204,435.30/306,543.60 = 85,972.80/x
  3. Step 3: Cross multiply
    204,435.30x = 306,543.60 × 85,972.80
  4. Step 4: Simplify right side
    204,435.30x = 26,354,411,614.08
  5. Step 5: Solve for x
    x = 26,354,411,614.08/204,435.30
  6. Step 6: Final answer
    x = 128,913.21

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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.