Home / 140,019.54-193,170.50-81,044.21

Finding the Fourth Proportional to 140,019.54, 193,170.50 and 81,044.21

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Solution

The fourth proportional to 140,019.54, 193,170.50 and 81,044.21 is: 111,808.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,019.54 : 193,170.50 = 81,044.21 : x
  2. Step 2: Convert to fraction form
    140,019.54/193,170.50 = 81,044.21/x
  3. Step 3: Cross multiply
    140,019.54x = 193,170.50 × 81,044.21
  4. Step 4: Simplify right side
    140,019.54x = 15,655,351,405.30
  5. Step 5: Solve for x
    x = 15,655,351,405.30/140,019.54
  6. Step 6: Final answer
    x = 111,808.34

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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.