Home / 160,824.21-221,792.09-100,400.43

Finding the Fourth Proportional to 160,824.21, 221,792.09 and 100,400.43

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Solution

The fourth proportional to 160,824.21, 221,792.09 and 100,400.43 is: 138,461.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,824.21 : 221,792.09 = 100,400.43 : x
  2. Step 2: Convert to fraction form
    160,824.21/221,792.09 = 100,400.43/x
  3. Step 3: Cross multiply
    160,824.21x = 221,792.09 × 100,400.43
  4. Step 4: Simplify right side
    160,824.21x = 22,268,020,704.60
  5. Step 5: Solve for x
    x = 22,268,020,704.60/160,824.21
  6. Step 6: Final answer
    x = 138,461.87

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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.