Home / 144,801.81-199,831.91-81,137.25

Finding the Fourth Proportional to 144,801.81, 199,831.91 and 81,137.25

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Solution

The fourth proportional to 144,801.81, 199,831.91 and 81,137.25 is: 111,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,801.81 : 199,831.91 = 81,137.25 : x
  2. Step 2: Convert to fraction form
    144,801.81/199,831.91 = 81,137.25/x
  3. Step 3: Cross multiply
    144,801.81x = 199,831.91 × 81,137.25
  4. Step 4: Simplify right side
    144,801.81x = 16,213,811,233.96
  5. Step 5: Solve for x
    x = 16,213,811,233.96/144,801.81
  6. Step 6: Final answer
    x = 111,972.43

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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.