Home / 111,719.90-154,122.09-98,986.07

Finding the Fourth Proportional to 111,719.90, 154,122.09 and 98,986.07

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Solution

The fourth proportional to 111,719.90, 154,122.09 and 98,986.07 is: 136,555.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,719.90 : 154,122.09 = 98,986.07 : x
  2. Step 2: Convert to fraction form
    111,719.90/154,122.09 = 98,986.07/x
  3. Step 3: Cross multiply
    111,719.90x = 154,122.09 × 98,986.07
  4. Step 4: Simplify right side
    111,719.90x = 15,255,939,989.29
  5. Step 5: Solve for x
    x = 15,255,939,989.29/111,719.90
  6. Step 6: Final answer
    x = 136,555.26

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1.5x scale

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.