Home / 138,986.40-191,749.44-91,266.24

Finding the Fourth Proportional to 138,986.40, 191,749.44 and 91,266.24

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Solution

The fourth proportional to 138,986.40, 191,749.44 and 91,266.24 is: 125,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,986.40 : 191,749.44 = 91,266.24 : x
  2. Step 2: Convert to fraction form
    138,986.40/191,749.44 = 91,266.24/x
  3. Step 3: Cross multiply
    138,986.40x = 191,749.44 × 91,266.24
  4. Step 4: Simplify right side
    138,986.40x = 17,500,250,410.91
  5. Step 5: Solve for x
    x = 17,500,250,410.91/138,986.40
  6. Step 6: Final answer
    x = 125,913.40

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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.