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Finding the Fourth Proportional to 161,409.88, 241,809.54 and 91,339.48

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Solution

The fourth proportional to 161,409.88, 241,809.54 and 91,339.48 is: 136,836.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,409.88 : 241,809.54 = 91,339.48 : x
  2. Step 2: Convert to fraction form
    161,409.88/241,809.54 = 91,339.48/x
  3. Step 3: Cross multiply
    161,409.88x = 241,809.54 × 91,339.48
  4. Step 4: Simplify right side
    161,409.88x = 22,086,757,642.64
  5. Step 5: Solve for x
    x = 22,086,757,642.64/161,409.88
  6. Step 6: Final answer
    x = 136,836.47

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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.