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Finding the Fourth Proportional to 120,643.45, 181,035.74 and 50,516.89

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Solution

The fourth proportional to 120,643.45, 181,035.74 and 50,516.89 is: 75,804.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,643.45 : 181,035.74 = 50,516.89 : x
  2. Step 2: Convert to fraction form
    120,643.45/181,035.74 = 50,516.89/x
  3. Step 3: Cross multiply
    120,643.45x = 181,035.74 × 50,516.89
  4. Step 4: Simplify right side
    120,643.45x = 9,145,362,311.06
  5. Step 5: Solve for x
    x = 9,145,362,311.06/120,643.45
  6. Step 6: Final answer
    x = 75,804.88

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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.