Home / 115,305.36-159,121.20-65,004.36

Finding the Fourth Proportional to 115,305.36, 159,121.20 and 65,004.36

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Solution

The fourth proportional to 115,305.36, 159,121.20 and 65,004.36 is: 89,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,305.36 : 159,121.20 = 65,004.36 : x
  2. Step 2: Convert to fraction form
    115,305.36/159,121.20 = 65,004.36/x
  3. Step 3: Cross multiply
    115,305.36x = 159,121.20 × 65,004.36
  4. Step 4: Simplify right side
    115,305.36x = 10,343,571,768.43
  5. Step 5: Solve for x
    x = 10,343,571,768.43/115,305.36
  6. Step 6: Final answer
    x = 89,705.91

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1.5x scale

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.