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Finding the Fourth Proportional to 203,661.53, 305,513.08 and 70,541.54

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Solution

The fourth proportional to 203,661.53, 305,513.08 and 70,541.54 is: 105,819.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,661.53 : 305,513.08 = 70,541.54 : x
  2. Step 2: Convert to fraction form
    203,661.53/305,513.08 = 70,541.54/x
  3. Step 3: Cross multiply
    203,661.53x = 305,513.08 × 70,541.54
  4. Step 4: Simplify right side
    203,661.53x = 21,551,363,153.34
  5. Step 5: Solve for x
    x = 21,551,363,153.34/203,661.53
  6. Step 6: Final answer
    x = 105,819.51

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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.