Home / 226,237.78-312,132.17-128,107.67

Finding the Fourth Proportional to 226,237.78, 312,132.17 and 128,107.67

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Solution

The fourth proportional to 226,237.78, 312,132.17 and 128,107.67 is: 176,745.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,237.78 : 312,132.17 = 128,107.67 : x
  2. Step 2: Convert to fraction form
    226,237.78/312,132.17 = 128,107.67/x
  3. Step 3: Cross multiply
    226,237.78x = 312,132.17 × 128,107.67
  4. Step 4: Simplify right side
    226,237.78x = 39,986,523,947.62
  5. Step 5: Solve for x
    x = 39,986,523,947.62/226,237.78
  6. Step 6: Final answer
    x = 176,745.56

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1.5x scale

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.