Home / 208,347.42-312,543.09-68,105.82

Finding the Fourth Proportional to 208,347.42, 312,543.09 and 68,105.82

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Solution

The fourth proportional to 208,347.42, 312,543.09 and 68,105.82 is: 102,165.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,347.42 : 312,543.09 = 68,105.82 : x
  2. Step 2: Convert to fraction form
    208,347.42/312,543.09 = 68,105.82/x
  3. Step 3: Cross multiply
    208,347.42x = 312,543.09 × 68,105.82
  4. Step 4: Simplify right side
    208,347.42x = 21,286,003,429.78
  5. Step 5: Solve for x
    x = 21,286,003,429.78/208,347.42
  6. Step 6: Final answer
    x = 102,165.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.