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Finding the Fourth Proportional to 145,172.56, 217,766.94 and 45,346.60

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Solution

The fourth proportional to 145,172.56, 217,766.94 and 45,346.60 is: 68,022.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,172.56 : 217,766.94 = 45,346.60 : x
  2. Step 2: Convert to fraction form
    145,172.56/217,766.94 = 45,346.60/x
  3. Step 3: Cross multiply
    145,172.56x = 217,766.94 × 45,346.60
  4. Step 4: Simplify right side
    145,172.56x = 9,874,990,321.40
  5. Step 5: Solve for x
    x = 9,874,990,321.40/145,172.56
  6. Step 6: Final answer
    x = 68,022.43

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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.