Home / 105,003.72-144,917.62-66,297.78

Finding the Fourth Proportional to 105,003.72, 144,917.62 and 66,297.78

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Solution

The fourth proportional to 105,003.72, 144,917.62 and 66,297.78 is: 91,498.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,003.72 : 144,917.62 = 66,297.78 : x
  2. Step 2: Convert to fraction form
    105,003.72/144,917.62 = 66,297.78/x
  3. Step 3: Cross multiply
    105,003.72x = 144,917.62 × 66,297.78
  4. Step 4: Simplify right side
    105,003.72x = 9,607,716,323.14
  5. Step 5: Solve for x
    x = 9,607,716,323.14/105,003.72
  6. Step 6: Final answer
    x = 91,498.82

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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.