Home / 187,018.31-280,564.05-68,690.54

Finding the Fourth Proportional to 187,018.31, 280,564.05 and 68,690.54

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Solution

The fourth proportional to 187,018.31, 280,564.05 and 68,690.54 is: 103,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,018.31 : 280,564.05 = 68,690.54 : x
  2. Step 2: Convert to fraction form
    187,018.31/280,564.05 = 68,690.54/x
  3. Step 3: Cross multiply
    187,018.31x = 280,564.05 × 68,690.54
  4. Step 4: Simplify right side
    187,018.31x = 19,272,096,099.09
  5. Step 5: Solve for x
    x = 19,272,096,099.09/187,018.31
  6. Step 6: Final answer
    x = 103,049.25

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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.