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Finding the Fourth Proportional to 151,453.44, 209,005.92 and 87,828.21

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Solution

The fourth proportional to 151,453.44, 209,005.92 and 87,828.21 is: 121,203.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,453.44 : 209,005.92 = 87,828.21 : x
  2. Step 2: Convert to fraction form
    151,453.44/209,005.92 = 87,828.21/x
  3. Step 3: Cross multiply
    151,453.44x = 209,005.92 × 87,828.21
  4. Step 4: Simplify right side
    151,453.44x = 18,356,615,833.00
  5. Step 5: Solve for x
    x = 18,356,615,833.00/151,453.44
  6. Step 6: Final answer
    x = 121,203.03

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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.