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Finding the Fourth Proportional to 123,491.78, 185,244.90 and 34,752.20

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Solution

The fourth proportional to 123,491.78, 185,244.90 and 34,752.20 is: 52,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.78 : 185,244.90 = 34,752.20 : x
  2. Step 2: Convert to fraction form
    123,491.78/185,244.90 = 34,752.20/x
  3. Step 3: Cross multiply
    123,491.78x = 185,244.90 × 34,752.20
  4. Step 4: Simplify right side
    123,491.78x = 6,437,667,813.78
  5. Step 5: Solve for x
    x = 6,437,667,813.78/123,491.78
  6. Step 6: Final answer
    x = 52,130.33

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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.