Home / 144,135.42-198,893.79-80,461.50

Finding the Fourth Proportional to 144,135.42, 198,893.79 and 80,461.50

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Solution

The fourth proportional to 144,135.42, 198,893.79 and 80,461.50 is: 111,029.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,135.42 : 198,893.79 = 80,461.50 : x
  2. Step 2: Convert to fraction form
    144,135.42/198,893.79 = 80,461.50/x
  3. Step 3: Cross multiply
    144,135.42x = 198,893.79 × 80,461.50
  4. Step 4: Simplify right side
    144,135.42x = 16,003,292,684.09
  5. Step 5: Solve for x
    x = 16,003,292,684.09/144,135.42
  6. Step 6: Final answer
    x = 111,029.56

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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.