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Finding the Fourth Proportional to 120,036.84, 180,093.72 and 84,050.79

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Solution

The fourth proportional to 120,036.84, 180,093.72 and 84,050.79 is: 126,103.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,036.84 : 180,093.72 = 84,050.79 : x
  2. Step 2: Convert to fraction form
    120,036.84/180,093.72 = 84,050.79/x
  3. Step 3: Cross multiply
    120,036.84x = 180,093.72 × 84,050.79
  4. Step 4: Simplify right side
    120,036.84x = 15,137,019,440.04
  5. Step 5: Solve for x
    x = 15,137,019,440.04/120,036.84
  6. Step 6: Final answer
    x = 126,103.12

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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.