Home / 208,178.28-287,286.18-112,684.68

Finding the Fourth Proportional to 208,178.28, 287,286.18 and 112,684.68

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Solution

The fourth proportional to 208,178.28, 287,286.18 and 112,684.68 is: 155,504.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,178.28 : 287,286.18 = 112,684.68 : x
  2. Step 2: Convert to fraction form
    208,178.28/287,286.18 = 112,684.68/x
  3. Step 3: Cross multiply
    208,178.28x = 287,286.18 × 112,684.68
  4. Step 4: Simplify right side
    208,178.28x = 32,372,751,261.72
  5. Step 5: Solve for x
    x = 32,372,751,261.72/208,178.28
  6. Step 6: Final answer
    x = 155,504.94

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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.