Home / 140,569.73-193,989.03-76,908.89

Finding the Fourth Proportional to 140,569.73, 193,989.03 and 76,908.89

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Solution

The fourth proportional to 140,569.73, 193,989.03 and 76,908.89 is: 106,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,569.73 : 193,989.03 = 76,908.89 : x
  2. Step 2: Convert to fraction form
    140,569.73/193,989.03 = 76,908.89/x
  3. Step 3: Cross multiply
    140,569.73x = 193,989.03 × 76,908.89
  4. Step 4: Simplify right side
    140,569.73x = 14,919,481,166.04
  5. Step 5: Solve for x
    x = 14,919,481,166.04/140,569.73
  6. Step 6: Final answer
    x = 106,135.80

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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.