Home / 144,771.21-199,792.44-81,129.51

Finding the Fourth Proportional to 144,771.21, 199,792.44 and 81,129.51

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Solution

The fourth proportional to 144,771.21, 199,792.44 and 81,129.51 is: 111,963.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,771.21 : 199,792.44 = 81,129.51 : x
  2. Step 2: Convert to fraction form
    144,771.21/199,792.44 = 81,129.51/x
  3. Step 3: Cross multiply
    144,771.21x = 199,792.44 × 81,129.51
  4. Step 4: Simplify right side
    144,771.21x = 16,209,062,758.90
  5. Step 5: Solve for x
    x = 16,209,062,758.90/144,771.21
  6. Step 6: Final answer
    x = 111,963.30

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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.