Home / 187,131.44-280,767-112,305.28

Finding the Fourth Proportional to 187,131.44, 280,767 and 112,305.28

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Solution

The fourth proportional to 187,131.44, 280,767 and 112,305.28 is: 168,499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,131.44 : 280,767 = 112,305.28 : x
  2. Step 2: Convert to fraction form
    187,131.44/280,767 = 112,305.28/x
  3. Step 3: Cross multiply
    187,131.44x = 280,767 × 112,305.28
  4. Step 4: Simplify right side
    187,131.44x = 31,531,616,549.76
  5. Step 5: Solve for x
    x = 31,531,616,549.76/187,131.44
  6. Step 6: Final answer
    x = 168,499.83

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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.