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Finding the Fourth Proportional to 103,800.20, 155,773.20 and 66,451.10

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Solution

The fourth proportional to 103,800.20, 155,773.20 and 66,451.10 is: 99,723.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,800.20 : 155,773.20 = 66,451.10 : x
  2. Step 2: Convert to fraction form
    103,800.20/155,773.20 = 66,451.10/x
  3. Step 3: Cross multiply
    103,800.20x = 155,773.20 × 66,451.10
  4. Step 4: Simplify right side
    103,800.20x = 10,351,300,490.52
  5. Step 5: Solve for x
    x = 10,351,300,490.52/103,800.20
  6. Step 6: Final answer
    x = 99,723.32

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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.