Home / 147,974.16-221,955.36-81,546

Finding the Fourth Proportional to 147,974.16, 221,955.36 and 81,546

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Solution

The fourth proportional to 147,974.16, 221,955.36 and 81,546 is: 122,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,974.16 : 221,955.36 = 81,546 : x
  2. Step 2: Convert to fraction form
    147,974.16/221,955.36 = 81,546/x
  3. Step 3: Cross multiply
    147,974.16x = 221,955.36 × 81,546
  4. Step 4: Simplify right side
    147,974.16x = 18,099,571,786.56
  5. Step 5: Solve for x
    x = 18,099,571,786.56/147,974.16
  6. Step 6: Final answer
    x = 122,315.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.