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Finding the Fourth Proportional to 131,196.64, 181,050.44 and 74,608

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Solution

The fourth proportional to 131,196.64, 181,050.44 and 74,608 is: 102,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,196.64 : 181,050.44 = 74,608 : x
  2. Step 2: Convert to fraction form
    131,196.64/181,050.44 = 74,608/x
  3. Step 3: Cross multiply
    131,196.64x = 181,050.44 × 74,608
  4. Step 4: Simplify right side
    131,196.64x = 13,507,811,227.52
  5. Step 5: Solve for x
    x = 13,507,811,227.52/131,196.64
  6. Step 6: Final answer
    x = 102,958.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.