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Finding the Fourth Proportional to 103,651.20, 155,361.60 and 44,476.80

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Solution

The fourth proportional to 103,651.20, 155,361.60 and 44,476.80 is: 66,665.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,651.20 : 155,361.60 = 44,476.80 : x
  2. Step 2: Convert to fraction form
    103,651.20/155,361.60 = 44,476.80/x
  3. Step 3: Cross multiply
    103,651.20x = 155,361.60 × 44,476.80
  4. Step 4: Simplify right side
    103,651.20x = 6,909,986,810.88
  5. Step 5: Solve for x
    x = 6,909,986,810.88/103,651.20
  6. Step 6: Final answer
    x = 66,665.77

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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.