Home / 115,939.58-159,996.38-65,643.26

Finding the Fourth Proportional to 115,939.58, 159,996.38 and 65,643.26

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Solution

The fourth proportional to 115,939.58, 159,996.38 and 65,643.26 is: 90,587.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,939.58 : 159,996.38 = 65,643.26 : x
  2. Step 2: Convert to fraction form
    115,939.58/159,996.38 = 65,643.26/x
  3. Step 3: Cross multiply
    115,939.58x = 159,996.38 × 65,643.26
  4. Step 4: Simplify right side
    115,939.58x = 10,502,683,971.40
  5. Step 5: Solve for x
    x = 10,502,683,971.40/115,939.58
  6. Step 6: Final answer
    x = 90,587.56

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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.