Home / 135,916.30-203,874.45-82,772.20

Finding the Fourth Proportional to 135,916.30, 203,874.45 and 82,772.20

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Solution

The fourth proportional to 135,916.30, 203,874.45 and 82,772.20 is: 124,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,916.30 : 203,874.45 = 82,772.20 : x
  2. Step 2: Convert to fraction form
    135,916.30/203,874.45 = 82,772.20/x
  3. Step 3: Cross multiply
    135,916.30x = 203,874.45 × 82,772.20
  4. Step 4: Simplify right side
    135,916.30x = 16,875,136,750.29
  5. Step 5: Solve for x
    x = 16,875,136,750.29/135,916.30
  6. Step 6: Final answer
    x = 124,158.30

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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.