Home / 105,682.23-145,839.78-57,935.97

Finding the Fourth Proportional to 105,682.23, 145,839.78 and 57,935.97

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Solution

The fourth proportional to 105,682.23, 145,839.78 and 57,935.97 is: 79,950.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,682.23 : 145,839.78 = 57,935.97 : x
  2. Step 2: Convert to fraction form
    105,682.23/145,839.78 = 57,935.97/x
  3. Step 3: Cross multiply
    105,682.23x = 145,839.78 × 57,935.97
  4. Step 4: Simplify right side
    105,682.23x = 8,449,369,118.89
  5. Step 5: Solve for x
    x = 8,449,369,118.89/105,682.23
  6. Step 6: Final answer
    x = 79,950.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.