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Finding the Fourth Proportional to 144,940.04, 200,028.80 and 80,415.60

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Solution

The fourth proportional to 144,940.04, 200,028.80 and 80,415.60 is: 110,979.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,940.04 : 200,028.80 = 80,415.60 : x
  2. Step 2: Convert to fraction form
    144,940.04/200,028.80 = 80,415.60/x
  3. Step 3: Cross multiply
    144,940.04x = 200,028.80 × 80,415.60
  4. Step 4: Simplify right side
    144,940.04x = 16,085,435,969.28
  5. Step 5: Solve for x
    x = 16,085,435,969.28/144,940.04
  6. Step 6: Final answer
    x = 110,979.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.