Home / 128,542.96-192,888.23-100,383.98

Finding the Fourth Proportional to 128,542.96, 192,888.23 and 100,383.98

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Solution

The fourth proportional to 128,542.96, 192,888.23 and 100,383.98 is: 150,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,542.96 : 192,888.23 = 100,383.98 : x
  2. Step 2: Convert to fraction form
    128,542.96/192,888.23 = 100,383.98/x
  3. Step 3: Cross multiply
    128,542.96x = 192,888.23 × 100,383.98
  4. Step 4: Simplify right side
    128,542.96x = 19,362,888,955.74
  5. Step 5: Solve for x
    x = 19,362,888,955.74/128,542.96
  6. Step 6: Final answer
    x = 150,633.60

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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.