Home / 126,138.54-188,993.70-76,113.53

Finding the Fourth Proportional to 126,138.54, 188,993.70 and 76,113.53

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Solution

The fourth proportional to 126,138.54, 188,993.70 and 76,113.53 is: 114,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,138.54 : 188,993.70 = 76,113.53 : x
  2. Step 2: Convert to fraction form
    126,138.54/188,993.70 = 76,113.53/x
  3. Step 3: Cross multiply
    126,138.54x = 188,993.70 × 76,113.53
  4. Step 4: Simplify right side
    126,138.54x = 14,384,977,654.76
  5. Step 5: Solve for x
    x = 14,384,977,654.76/126,138.54
  6. Step 6: Final answer
    x = 114,041.10

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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.