Home / 138,344.94-190,840.59-120,408.30

Finding the Fourth Proportional to 138,344.94, 190,840.59 and 120,408.30

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Solution

The fourth proportional to 138,344.94, 190,840.59 and 120,408.30 is: 166,097.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,344.94 : 190,840.59 = 120,408.30 : x
  2. Step 2: Convert to fraction form
    138,344.94/190,840.59 = 120,408.30/x
  3. Step 3: Cross multiply
    138,344.94x = 190,840.59 × 120,408.30
  4. Step 4: Simplify right side
    138,344.94x = 22,978,791,012.90
  5. Step 5: Solve for x
    x = 22,978,791,012.90/138,344.94
  6. Step 6: Final answer
    x = 166,097.81

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1.5x scale

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.