Home / 129,139.05-193,719.69-35,644.80

Finding the Fourth Proportional to 129,139.05, 193,719.69 and 35,644.80

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Solution

The fourth proportional to 129,139.05, 193,719.69 and 35,644.80 is: 53,470.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,139.05 : 193,719.69 = 35,644.80 : x
  2. Step 2: Convert to fraction form
    129,139.05/193,719.69 = 35,644.80/x
  3. Step 3: Cross multiply
    129,139.05x = 193,719.69 × 35,644.80
  4. Step 4: Simplify right side
    129,139.05x = 6,905,099,606.11
  5. Step 5: Solve for x
    x = 6,905,099,606.11/129,139.05
  6. Step 6: Final answer
    x = 53,470.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.