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Finding the Fourth Proportional to 144,797.94, 199,820.97 and 81,136.17

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Solution

The fourth proportional to 144,797.94, 199,820.97 and 81,136.17 is: 111,967.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,797.94 : 199,820.97 = 81,136.17 : x
  2. Step 2: Convert to fraction form
    144,797.94/199,820.97 = 81,136.17/x
  3. Step 3: Cross multiply
    144,797.94x = 199,820.97 × 81,136.17
  4. Step 4: Simplify right side
    144,797.94x = 16,212,708,191.48
  5. Step 5: Solve for x
    x = 16,212,708,191.48/144,797.94
  6. Step 6: Final answer
    x = 111,967.81

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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.