Home / 105,900.68-158,851.09-66,485.48

Finding the Fourth Proportional to 105,900.68, 158,851.09 and 66,485.48

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Solution

The fourth proportional to 105,900.68, 158,851.09 and 66,485.48 is: 99,728.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,900.68 : 158,851.09 = 66,485.48 : x
  2. Step 2: Convert to fraction form
    105,900.68/158,851.09 = 66,485.48/x
  3. Step 3: Cross multiply
    105,900.68x = 158,851.09 × 66,485.48
  4. Step 4: Simplify right side
    105,900.68x = 10,561,289,882.04
  5. Step 5: Solve for x
    x = 10,561,289,882.04/105,900.68
  6. Step 6: Final answer
    x = 99,728.25

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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.