Home / 138,218.63-190,800.57-92,922.88

Finding the Fourth Proportional to 138,218.63, 190,800.57 and 92,922.88

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Solution

The fourth proportional to 138,218.63, 190,800.57 and 92,922.88 is: 128,273.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,218.63 : 190,800.57 = 92,922.88 : x
  2. Step 2: Convert to fraction form
    138,218.63/190,800.57 = 92,922.88/x
  3. Step 3: Cross multiply
    138,218.63x = 190,800.57 × 92,922.88
  4. Step 4: Simplify right side
    138,218.63x = 17,729,738,005.43
  5. Step 5: Solve for x
    x = 17,729,738,005.43/138,218.63
  6. Step 6: Final answer
    x = 128,273.14

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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.