Home / 128,012.19-192,018.07-53,082.33

Finding the Fourth Proportional to 128,012.19, 192,018.07 and 53,082.33

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Solution

The fourth proportional to 128,012.19, 192,018.07 and 53,082.33 is: 79,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,012.19 : 192,018.07 = 53,082.33 : x
  2. Step 2: Convert to fraction form
    128,012.19/192,018.07 = 53,082.33/x
  3. Step 3: Cross multiply
    128,012.19x = 192,018.07 × 53,082.33
  4. Step 4: Simplify right side
    128,012.19x = 10,192,766,557.70
  5. Step 5: Solve for x
    x = 10,192,766,557.70/128,012.19
  6. Step 6: Final answer
    x = 79,623.41

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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.