Home / 144,786.16-199,812.90-81,144.46

Finding the Fourth Proportional to 144,786.16, 199,812.90 and 81,144.46

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Solution

The fourth proportional to 144,786.16, 199,812.90 and 81,144.46 is: 111,983.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,786.16 : 199,812.90 = 81,144.46 : x
  2. Step 2: Convert to fraction form
    144,786.16/199,812.90 = 81,144.46/x
  3. Step 3: Cross multiply
    144,786.16x = 199,812.90 × 81,144.46
  4. Step 4: Simplify right side
    144,786.16x = 16,213,709,871.53
  5. Step 5: Solve for x
    x = 16,213,709,871.53/144,786.16
  6. Step 6: Final answer
    x = 111,983.84

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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.