Home / 91,206.58-136,716.90-51,680.20

Finding the Fourth Proportional to 91,206.58, 136,716.90 and 51,680.20

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Solution

The fourth proportional to 91,206.58, 136,716.90 and 51,680.20 is: 77,467.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,206.58 : 136,716.90 = 51,680.20 : x
  2. Step 2: Convert to fraction form
    91,206.58/136,716.90 = 51,680.20/x
  3. Step 3: Cross multiply
    91,206.58x = 136,716.90 × 51,680.20
  4. Step 4: Simplify right side
    91,206.58x = 7,065,556,735.38
  5. Step 5: Solve for x
    x = 7,065,556,735.38/91,206.58
  6. Step 6: Final answer
    x = 77,467.62

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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.