Home / 208,186.38-287,286.16-122,133.46

Finding the Fourth Proportional to 208,186.38, 287,286.16 and 122,133.46

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Solution

The fourth proportional to 208,186.38, 287,286.16 and 122,133.46 is: 168,537.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,186.38 : 287,286.16 = 122,133.46 : x
  2. Step 2: Convert to fraction form
    208,186.38/287,286.16 = 122,133.46/x
  3. Step 3: Cross multiply
    208,186.38x = 287,286.16 × 122,133.46
  4. Step 4: Simplify right side
    208,186.38x = 35,087,252,730.91
  5. Step 5: Solve for x
    x = 35,087,252,730.91/208,186.38
  6. Step 6: Final answer
    x = 168,537.70

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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.