Home / 115,272.21-159,076.89-64,971.21

Finding the Fourth Proportional to 115,272.21, 159,076.89 and 64,971.21

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Solution

The fourth proportional to 115,272.21, 159,076.89 and 64,971.21 is: 89,660.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,272.21 : 159,076.89 = 64,971.21 : x
  2. Step 2: Convert to fraction form
    115,272.21/159,076.89 = 64,971.21/x
  3. Step 3: Cross multiply
    115,272.21x = 159,076.89 × 64,971.21
  4. Step 4: Simplify right side
    115,272.21x = 10,335,418,026.34
  5. Step 5: Solve for x
    x = 10,335,418,026.34/115,272.21
  6. Step 6: Final answer
    x = 89,660.97

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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.