Home / 155,345.03-214,374.09-87,361.97

Finding the Fourth Proportional to 155,345.03, 214,374.09 and 87,361.97

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Solution

The fourth proportional to 155,345.03, 214,374.09 and 87,361.97 is: 120,558.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,345.03 : 214,374.09 = 87,361.97 : x
  2. Step 2: Convert to fraction form
    155,345.03/214,374.09 = 87,361.97/x
  3. Step 3: Cross multiply
    155,345.03x = 214,374.09 × 87,361.97
  4. Step 4: Simplify right side
    155,345.03x = 18,728,141,747.49
  5. Step 5: Solve for x
    x = 18,728,141,747.49/155,345.03
  6. Step 6: Final answer
    x = 120,558.36

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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.