Home / 100,343.23-150,219.59-66,980.55

Finding the Fourth Proportional to 100,343.23, 150,219.59 and 66,980.55

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Solution

The fourth proportional to 100,343.23, 150,219.59 and 66,980.55 is: 100,273.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,343.23 : 150,219.59 = 66,980.55 : x
  2. Step 2: Convert to fraction form
    100,343.23/150,219.59 = 66,980.55/x
  3. Step 3: Cross multiply
    100,343.23x = 150,219.59 × 66,980.55
  4. Step 4: Simplify right side
    100,343.23x = 10,061,790,758.97
  5. Step 5: Solve for x
    x = 10,061,790,758.97/100,343.23
  6. Step 6: Final answer
    x = 100,273.74

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1.5x scale

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.