Home / 161,721.92-221,559.80-155,661.44

Finding the Fourth Proportional to 161,721.92, 221,559.80 and 155,661.44

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Solution

The fourth proportional to 161,721.92, 221,559.80 and 155,661.44 is: 213,256.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,721.92 : 221,559.80 = 155,661.44 : x
  2. Step 2: Convert to fraction form
    161,721.92/221,559.80 = 155,661.44/x
  3. Step 3: Cross multiply
    161,721.92x = 221,559.80 × 155,661.44
  4. Step 4: Simplify right side
    161,721.92x = 34,488,317,514.11
  5. Step 5: Solve for x
    x = 34,488,317,514.11/161,721.92
  6. Step 6: Final answer
    x = 213,256.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.