Home / 128,197.43-192,314.37-39,458.33

Finding the Fourth Proportional to 128,197.43, 192,314.37 and 39,458.33

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Solution

The fourth proportional to 128,197.43, 192,314.37 and 39,458.33 is: 59,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,197.43 : 192,314.37 = 39,458.33 : x
  2. Step 2: Convert to fraction form
    128,197.43/192,314.37 = 39,458.33/x
  3. Step 3: Cross multiply
    128,197.43x = 192,314.37 × 39,458.33
  4. Step 4: Simplify right side
    128,197.43x = 7,588,403,875.20
  5. Step 5: Solve for x
    x = 7,588,403,875.20/128,197.43
  6. Step 6: Final answer
    x = 59,193.10

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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.