Home / 138,212.22-190,748.34-77,797.56

Finding the Fourth Proportional to 138,212.22, 190,748.34 and 77,797.56

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Solution

The fourth proportional to 138,212.22, 190,748.34 and 77,797.56 is: 107,369.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,212.22 : 190,748.34 = 77,797.56 : x
  2. Step 2: Convert to fraction form
    138,212.22/190,748.34 = 77,797.56/x
  3. Step 3: Cross multiply
    138,212.22x = 190,748.34 × 77,797.56
  4. Step 4: Simplify right side
    138,212.22x = 14,839,755,426.05
  5. Step 5: Solve for x
    x = 14,839,755,426.05/138,212.22
  6. Step 6: Final answer
    x = 107,369.34

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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.