Home / 140,119.83-193,391.72-87,756.06

Finding the Fourth Proportional to 140,119.83, 193,391.72 and 87,756.06

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Solution

The fourth proportional to 140,119.83, 193,391.72 and 87,756.06 is: 121,119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,119.83 : 193,391.72 = 87,756.06 : x
  2. Step 2: Convert to fraction form
    140,119.83/193,391.72 = 87,756.06/x
  3. Step 3: Cross multiply
    140,119.83x = 193,391.72 × 87,756.06
  4. Step 4: Simplify right side
    140,119.83x = 16,971,295,119.73
  5. Step 5: Solve for x
    x = 16,971,295,119.73/140,119.83
  6. Step 6: Final answer
    x = 121,119.87

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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.