Home / 131,540.40-181,525.32-74,961.36

Finding the Fourth Proportional to 131,540.40, 181,525.32 and 74,961.36

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Solution

The fourth proportional to 131,540.40, 181,525.32 and 74,961.36 is: 103,446.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,540.40 : 181,525.32 = 74,961.36 : x
  2. Step 2: Convert to fraction form
    131,540.40/181,525.32 = 74,961.36/x
  3. Step 3: Cross multiply
    131,540.40x = 181,525.32 × 74,961.36
  4. Step 4: Simplify right side
    131,540.40x = 13,607,384,861.64
  5. Step 5: Solve for x
    x = 13,607,384,861.64/131,540.40
  6. Step 6: Final answer
    x = 103,446.43

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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.