Home / 187,395.78-280,643.19-107,190.66

Finding the Fourth Proportional to 187,395.78, 280,643.19 and 107,190.66

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Solution

The fourth proportional to 187,395.78, 280,643.19 and 107,190.66 is: 160,528.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,395.78 : 280,643.19 = 107,190.66 : x
  2. Step 2: Convert to fraction form
    187,395.78/280,643.19 = 107,190.66/x
  3. Step 3: Cross multiply
    187,395.78x = 280,643.19 × 107,190.66
  4. Step 4: Simplify right side
    187,395.78x = 30,082,328,760.61
  5. Step 5: Solve for x
    x = 30,082,328,760.61/187,395.78
  6. Step 6: Final answer
    x = 160,528.31

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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.