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Finding the Fourth Proportional to 122,305.46, 183,485.73 and 43,419.56

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Solution

The fourth proportional to 122,305.46, 183,485.73 and 43,419.56 is: 65,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,305.46 : 183,485.73 = 43,419.56 : x
  2. Step 2: Convert to fraction form
    122,305.46/183,485.73 = 43,419.56/x
  3. Step 3: Cross multiply
    122,305.46x = 183,485.73 × 43,419.56
  4. Step 4: Simplify right side
    122,305.46x = 7,966,869,662.88
  5. Step 5: Solve for x
    x = 7,966,869,662.88/122,305.46
  6. Step 6: Final answer
    x = 65,139.12

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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.