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Finding the Fourth Proportional to 103,635.15, 155,452.73 and 82,899.15

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Solution

The fourth proportional to 103,635.15, 155,452.73 and 82,899.15 is: 124,348.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,635.15 : 155,452.73 = 82,899.15 : x
  2. Step 2: Convert to fraction form
    103,635.15/155,452.73 = 82,899.15/x
  3. Step 3: Cross multiply
    103,635.15x = 155,452.73 × 82,899.15
  4. Step 4: Simplify right side
    103,635.15x = 12,886,899,182.18
  5. Step 5: Solve for x
    x = 12,886,899,182.18/103,635.15
  6. Step 6: Final answer
    x = 124,348.73

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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.