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Finding the Fourth Proportional to 187,243.91, 280,867.91 and 54,125.32

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Solution

The fourth proportional to 187,243.91, 280,867.91 and 54,125.32 is: 81,188.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,243.91 : 280,867.91 = 54,125.32 : x
  2. Step 2: Convert to fraction form
    187,243.91/280,867.91 = 54,125.32/x
  3. Step 3: Cross multiply
    187,243.91x = 280,867.91 × 54,125.32
  4. Step 4: Simplify right side
    187,243.91x = 15,202,064,574.83
  5. Step 5: Solve for x
    x = 15,202,064,574.83/187,243.91
  6. Step 6: Final answer
    x = 81,188.57

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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.