Home / 160,721.92-221,721.60-100,253.44

Finding the Fourth Proportional to 160,721.92, 221,721.60 and 100,253.44

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Solution

The fourth proportional to 160,721.92, 221,721.60 and 100,253.44 is: 138,303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,721.92 : 221,721.60 = 100,253.44 : x
  2. Step 2: Convert to fraction form
    160,721.92/221,721.60 = 100,253.44/x
  3. Step 3: Cross multiply
    160,721.92x = 221,721.60 × 100,253.44
  4. Step 4: Simplify right side
    160,721.92x = 22,228,353,122.30
  5. Step 5: Solve for x
    x = 22,228,353,122.30/160,721.92
  6. Step 6: Final answer
    x = 138,303.18

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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.