Home / 187,864.11-259,263.09-111,428.46

Finding the Fourth Proportional to 187,864.11, 259,263.09 and 111,428.46

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Solution

The fourth proportional to 187,864.11, 259,263.09 and 111,428.46 is: 153,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,864.11 : 259,263.09 = 111,428.46 : x
  2. Step 2: Convert to fraction form
    187,864.11/259,263.09 = 111,428.46/x
  3. Step 3: Cross multiply
    187,864.11x = 259,263.09 × 111,428.46
  4. Step 4: Simplify right side
    187,864.11x = 28,889,286,853.54
  5. Step 5: Solve for x
    x = 28,889,286,853.54/187,864.11
  6. Step 6: Final answer
    x = 153,777.57

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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.