Home / 144,772.21-199,793.82-81,130.51

Finding the Fourth Proportional to 144,772.21, 199,793.82 and 81,130.51

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Solution

The fourth proportional to 144,772.21, 199,793.82 and 81,130.51 is: 111,964.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,772.21 : 199,793.82 = 81,130.51 : x
  2. Step 2: Convert to fraction form
    144,772.21/199,793.82 = 81,130.51/x
  3. Step 3: Cross multiply
    144,772.21x = 199,793.82 × 81,130.51
  4. Step 4: Simplify right side
    144,772.21x = 16,209,374,511.45
  5. Step 5: Solve for x
    x = 16,209,374,511.45/144,772.21
  6. Step 6: Final answer
    x = 111,964.68

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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.