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Finding the Fourth Proportional to 202,719.21, 279,796.92 and 117,885.21

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Solution

The fourth proportional to 202,719.21, 279,796.92 and 117,885.21 is: 162,707.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,719.21 : 279,796.92 = 117,885.21 : x
  2. Step 2: Convert to fraction form
    202,719.21/279,796.92 = 117,885.21/x
  3. Step 3: Cross multiply
    202,719.21x = 279,796.92 × 117,885.21
  4. Step 4: Simplify right side
    202,719.21x = 32,983,918,671.55
  5. Step 5: Solve for x
    x = 32,983,918,671.55/202,719.21
  6. Step 6: Final answer
    x = 162,707.42

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1.5x scale

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.