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Finding the Fourth Proportional to 120,700.35, 180,992.07 and 70,796.79

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Solution

The fourth proportional to 120,700.35, 180,992.07 and 70,796.79 is: 106,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,700.35 : 180,992.07 = 70,796.79 : x
  2. Step 2: Convert to fraction form
    120,700.35/180,992.07 = 70,796.79/x
  3. Step 3: Cross multiply
    120,700.35x = 180,992.07 × 70,796.79
  4. Step 4: Simplify right side
    120,700.35x = 12,813,657,571.46
  5. Step 5: Solve for x
    x = 12,813,657,571.46/120,700.35
  6. Step 6: Final answer
    x = 106,160.90

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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.