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Finding the Fourth Proportional to 145,401, 217,944.36 and 61,141.56

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Solution

The fourth proportional to 145,401, 217,944.36 and 61,141.56 is: 91,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,401 : 217,944.36 = 61,141.56 : x
  2. Step 2: Convert to fraction form
    145,401/217,944.36 = 61,141.56/x
  3. Step 3: Cross multiply
    145,401x = 217,944.36 × 61,141.56
  4. Step 4: Simplify right side
    145,401x = 13,325,458,163.60
  5. Step 5: Solve for x
    x = 13,325,458,163.60/145,401
  6. Step 6: Final answer
    x = 91,646.26

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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.