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Finding the Fourth Proportional to 200,139.80, 300,126.67 and 73,787.22

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Solution

The fourth proportional to 200,139.80, 300,126.67 and 73,787.22 is: 110,650.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,139.80 : 300,126.67 = 73,787.22 : x
  2. Step 2: Convert to fraction form
    200,139.80/300,126.67 = 73,787.22/x
  3. Step 3: Cross multiply
    200,139.80x = 300,126.67 × 73,787.22
  4. Step 4: Simplify right side
    200,139.80x = 22,145,512,442.69
  5. Step 5: Solve for x
    x = 22,145,512,442.69/200,139.80
  6. Step 6: Final answer
    x = 110,650.22

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1.5x scale

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.