Home / 138,085,185.65-190,562,008.28-78,544,944.03

Finding the Fourth Proportional to 138,085,185.65, 190,562,008.28 and 78,544,944.03

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Solution

The fourth proportional to 138,085,185.65, 190,562,008.28 and 78,544,944.03 is: 108,394,555.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,085,185.65 : 190,562,008.28 = 78,544,944.03 : x
  2. Step 2: Convert to fraction form
    138,085,185.65/190,562,008.28 = 78,544,944.03/x
  3. Step 3: Cross multiply
    138,085,185.65x = 190,562,008.28 × 78,544,944.03
  4. Step 4: Simplify right side
    138,085,185.65x = 14,967,682,274,204,272
  5. Step 5: Solve for x
    x = 14,967,682,274,204,272/138,085,185.65
  6. Step 6: Final answer
    x = 108,394,555.17

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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.