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Finding the Fourth Proportional to 160,661.91, 221,719.32 and 96,987.39

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Solution

The fourth proportional to 160,661.91, 221,719.32 and 96,987.39 is: 133,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,661.91 : 221,719.32 = 96,987.39 : x
  2. Step 2: Convert to fraction form
    160,661.91/221,719.32 = 96,987.39/x
  3. Step 3: Cross multiply
    160,661.91x = 221,719.32 × 96,987.39
  4. Step 4: Simplify right side
    160,661.91x = 21,503,978,159.37
  5. Step 5: Solve for x
    x = 21,503,978,159.37/160,661.91
  6. Step 6: Final answer
    x = 133,846.15

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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.