Home / 128,426.23-192,648.57-39,668.23

Finding the Fourth Proportional to 128,426.23, 192,648.57 and 39,668.23

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Solution

The fourth proportional to 128,426.23, 192,648.57 and 39,668.23 is: 59,505.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,426.23 : 192,648.57 = 39,668.23 : x
  2. Step 2: Convert to fraction form
    128,426.23/192,648.57 = 39,668.23/x
  3. Step 3: Cross multiply
    128,426.23x = 192,648.57 × 39,668.23
  4. Step 4: Simplify right side
    128,426.23x = 7,642,027,783.93
  5. Step 5: Solve for x
    x = 7,642,027,783.93/128,426.23
  6. Step 6: Final answer
    x = 59,505.19

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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.