Home / 100,820.85-151,231.28-51,668.85

Finding the Fourth Proportional to 100,820.85, 151,231.28 and 51,668.85

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Solution

The fourth proportional to 100,820.85, 151,231.28 and 51,668.85 is: 77,503.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,820.85 : 151,231.28 = 51,668.85 : x
  2. Step 2: Convert to fraction form
    100,820.85/151,231.28 = 51,668.85/x
  3. Step 3: Cross multiply
    100,820.85x = 151,231.28 × 51,668.85
  4. Step 4: Simplify right side
    100,820.85x = 7,813,946,063.28
  5. Step 5: Solve for x
    x = 7,813,946,063.28/100,820.85
  6. Step 6: Final answer
    x = 77,503.28

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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.