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Finding the Fourth Proportional to 144,016.98, 198,739.71 and 79,485.39

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Solution

The fourth proportional to 144,016.98, 198,739.71 and 79,485.39 is: 109,687.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,016.98 : 198,739.71 = 79,485.39 : x
  2. Step 2: Convert to fraction form
    144,016.98/198,739.71 = 79,485.39/x
  3. Step 3: Cross multiply
    144,016.98x = 198,739.71 × 79,485.39
  4. Step 4: Simplify right side
    144,016.98x = 15,796,903,357.84
  5. Step 5: Solve for x
    x = 15,796,903,357.84/144,016.98
  6. Step 6: Final answer
    x = 109,687.78

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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.