Home / 208,325.82-312,503.45-103,116.54

Finding the Fourth Proportional to 208,325.82, 312,503.45 and 103,116.54

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Solution

The fourth proportional to 208,325.82, 312,503.45 and 103,116.54 is: 154,682.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,325.82 : 312,503.45 = 103,116.54 : x
  2. Step 2: Convert to fraction form
    208,325.82/312,503.45 = 103,116.54/x
  3. Step 3: Cross multiply
    208,325.82x = 312,503.45 × 103,116.54
  4. Step 4: Simplify right side
    208,325.82x = 32,224,273,986.48
  5. Step 5: Solve for x
    x = 32,224,273,986.48/208,325.82
  6. Step 6: Final answer
    x = 154,682.09

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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.