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Finding the Fourth Proportional to 120,093.54, 180,079.15 and 40,102.74

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Solution

The fourth proportional to 120,093.54, 180,079.15 and 40,102.74 is: 60,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,093.54 : 180,079.15 = 40,102.74 : x
  2. Step 2: Convert to fraction form
    120,093.54/180,079.15 = 40,102.74/x
  3. Step 3: Cross multiply
    120,093.54x = 180,079.15 × 40,102.74
  4. Step 4: Simplify right side
    120,093.54x = 7,221,667,331.87
  5. Step 5: Solve for x
    x = 7,221,667,331.87/120,093.54
  6. Step 6: Final answer
    x = 60,133.69

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1.5x scale

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.