Home / 140,795.20-194,296.80-77,136.96

Finding the Fourth Proportional to 140,795.20, 194,296.80 and 77,136.96

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Solution

The fourth proportional to 140,795.20, 194,296.80 and 77,136.96 is: 106,448.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,795.20 : 194,296.80 = 77,136.96 : x
  2. Step 2: Convert to fraction form
    140,795.20/194,296.80 = 77,136.96/x
  3. Step 3: Cross multiply
    140,795.20x = 194,296.80 × 77,136.96
  4. Step 4: Simplify right side
    140,795.20x = 14,987,464,489.73
  5. Step 5: Solve for x
    x = 14,987,464,489.73/140,795.20
  6. Step 6: Final answer
    x = 106,448.69

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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.