Home / 128,007.06-191,993.73-38,047.86

Finding the Fourth Proportional to 128,007.06, 191,993.73 and 38,047.86

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Solution

The fourth proportional to 128,007.06, 191,993.73 and 38,047.86 is: 57,066.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,007.06 : 191,993.73 = 38,047.86 : x
  2. Step 2: Convert to fraction form
    128,007.06/191,993.73 = 38,047.86/x
  3. Step 3: Cross multiply
    128,007.06x = 191,993.73 × 38,047.86
  4. Step 4: Simplify right side
    128,007.06x = 7,304,950,559.92
  5. Step 5: Solve for x
    x = 7,304,950,559.92/128,007.06
  6. Step 6: Final answer
    x = 57,066.78

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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.