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Finding the Fourth Proportional to 202,719.71, 279,797.61 and 117,885.71

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Solution

The fourth proportional to 202,719.71, 279,797.61 and 117,885.71 is: 162,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,719.71 : 279,797.61 = 117,885.71 : x
  2. Step 2: Convert to fraction form
    202,719.71/279,797.61 = 117,885.71/x
  3. Step 3: Cross multiply
    202,719.71x = 279,797.61 × 117,885.71
  4. Step 4: Simplify right side
    202,719.71x = 32,984,137,922.74
  5. Step 5: Solve for x
    x = 32,984,137,922.74/202,719.71
  6. Step 6: Final answer
    x = 162,708.10

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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.