Home / 128,085.24-192,127.56-71,195.30

Finding the Fourth Proportional to 128,085.24, 192,127.56 and 71,195.30

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Solution

The fourth proportional to 128,085.24, 192,127.56 and 71,195.30 is: 106,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,085.24 : 192,127.56 = 71,195.30 : x
  2. Step 2: Convert to fraction form
    128,085.24/192,127.56 = 71,195.30/x
  3. Step 3: Cross multiply
    128,085.24x = 192,127.56 × 71,195.30
  4. Step 4: Simplify right side
    128,085.24x = 13,678,579,272.47
  5. Step 5: Solve for x
    x = 13,678,579,272.47/128,085.24
  6. Step 6: Final answer
    x = 106,792.78

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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.