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Finding the Fourth Proportional to 144,906.60, 217,359.90 and 74,047.80

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Solution

The fourth proportional to 144,906.60, 217,359.90 and 74,047.80 is: 111,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,906.60 : 217,359.90 = 74,047.80 : x
  2. Step 2: Convert to fraction form
    144,906.60/217,359.90 = 74,047.80/x
  3. Step 3: Cross multiply
    144,906.60x = 217,359.90 × 74,047.80
  4. Step 4: Simplify right side
    144,906.60x = 16,095,022,403.22
  5. Step 5: Solve for x
    x = 16,095,022,403.22/144,906.60
  6. Step 6: Final answer
    x = 111,071.70

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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.