Home / 115,768.36-159,714.66-72,722.56

Finding the Fourth Proportional to 115,768.36, 159,714.66 and 72,722.56

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Solution

The fourth proportional to 115,768.36, 159,714.66 and 72,722.56 is: 100,328.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,768.36 : 159,714.66 = 72,722.56 : x
  2. Step 2: Convert to fraction form
    115,768.36/159,714.66 = 72,722.56/x
  3. Step 3: Cross multiply
    115,768.36x = 159,714.66 × 72,722.56
  4. Step 4: Simplify right side
    115,768.36x = 11,614,858,944.73
  5. Step 5: Solve for x
    x = 11,614,858,944.73/115,768.36
  6. Step 6: Final answer
    x = 100,328.44

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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.