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Finding the Fourth Proportional to 145,059.20, 218,107.20 and 122,249.60

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Solution

The fourth proportional to 145,059.20, 218,107.20 and 122,249.60 is: 183,811.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,059.20 : 218,107.20 = 122,249.60 : x
  2. Step 2: Convert to fraction form
    145,059.20/218,107.20 = 122,249.60/x
  3. Step 3: Cross multiply
    145,059.20x = 218,107.20 × 122,249.60
  4. Step 4: Simplify right side
    145,059.20x = 26,663,517,957.12
  5. Step 5: Solve for x
    x = 26,663,517,957.12/145,059.20
  6. Step 6: Final answer
    x = 183,811.29

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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.