Home / 111,021.12-153,203.52-68,583.36

Finding the Fourth Proportional to 111,021.12, 153,203.52 and 68,583.36

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Solution

The fourth proportional to 111,021.12, 153,203.52 and 68,583.36 is: 94,641.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,021.12 : 153,203.52 = 68,583.36 : x
  2. Step 2: Convert to fraction form
    111,021.12/153,203.52 = 68,583.36/x
  3. Step 3: Cross multiply
    111,021.12x = 153,203.52 × 68,583.36
  4. Step 4: Simplify right side
    111,021.12x = 10,507,212,165.43
  5. Step 5: Solve for x
    x = 10,507,212,165.43/111,021.12
  6. Step 6: Final answer
    x = 94,641.56

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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.