Home / 123,485.03-170,409.31-66,896.40

Finding the Fourth Proportional to 123,485.03, 170,409.31 and 66,896.40

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Solution

The fourth proportional to 123,485.03, 170,409.31 and 66,896.40 is: 92,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,485.03 : 170,409.31 = 66,896.40 : x
  2. Step 2: Convert to fraction form
    123,485.03/170,409.31 = 66,896.40/x
  3. Step 3: Cross multiply
    123,485.03x = 170,409.31 × 66,896.40
  4. Step 4: Simplify right side
    123,485.03x = 11,399,769,365.48
  5. Step 5: Solve for x
    x = 11,399,769,365.48/123,485.03
  6. Step 6: Final answer
    x = 92,317.01

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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.