Home / 129,140.05-193,721.19-35,645.80

Finding the Fourth Proportional to 129,140.05, 193,721.19 and 35,645.80

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Solution

The fourth proportional to 129,140.05, 193,721.19 and 35,645.80 is: 53,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,140.05 : 193,721.19 = 35,645.80 : x
  2. Step 2: Convert to fraction form
    129,140.05/193,721.19 = 35,645.80/x
  3. Step 3: Cross multiply
    129,140.05x = 193,721.19 × 35,645.80
  4. Step 4: Simplify right side
    129,140.05x = 6,905,346,794.50
  5. Step 5: Solve for x
    x = 6,905,346,794.50/129,140.05
  6. Step 6: Final answer
    x = 53,471.77

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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.