Home / 141,815.80-212,442.90-91,930.60

Finding the Fourth Proportional to 141,815.80, 212,442.90 and 91,930.60

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Solution

The fourth proportional to 141,815.80, 212,442.90 and 91,930.60 is: 137,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,815.80 : 212,442.90 = 91,930.60 : x
  2. Step 2: Convert to fraction form
    141,815.80/212,442.90 = 91,930.60/x
  3. Step 3: Cross multiply
    141,815.80x = 212,442.90 × 91,930.60
  4. Step 4: Simplify right side
    141,815.80x = 19,530,003,262.74
  5. Step 5: Solve for x
    x = 19,530,003,262.74/141,815.80
  6. Step 6: Final answer
    x = 137,713.87

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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.