Home / 128,023.48-192,063.66-49,137.76

Finding the Fourth Proportional to 128,023.48, 192,063.66 and 49,137.76

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Solution

The fourth proportional to 128,023.48, 192,063.66 and 49,137.76 is: 73,717.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,023.48 : 192,063.66 = 49,137.76 : x
  2. Step 2: Convert to fraction form
    128,023.48/192,063.66 = 49,137.76/x
  3. Step 3: Cross multiply
    128,023.48x = 192,063.66 × 49,137.76
  4. Step 4: Simplify right side
    128,023.48x = 9,437,578,029.80
  5. Step 5: Solve for x
    x = 9,437,578,029.80/128,023.48
  6. Step 6: Final answer
    x = 73,717.56

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1.5x scale

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.