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Finding the Fourth Proportional to 144,866.70, 199,928.38 and 81,216.80

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Solution

The fourth proportional to 144,866.70, 199,928.38 and 81,216.80 is: 112,086.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,866.70 : 199,928.38 = 81,216.80 : x
  2. Step 2: Convert to fraction form
    144,866.70/199,928.38 = 81,216.80/x
  3. Step 3: Cross multiply
    144,866.70x = 199,928.38 × 81,216.80
  4. Step 4: Simplify right side
    144,866.70x = 16,237,543,252.78
  5. Step 5: Solve for x
    x = 16,237,543,252.78/144,866.70
  6. Step 6: Final answer
    x = 112,086.10

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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.