Home / 138,104.34-190,589.67-77,677.80

Finding the Fourth Proportional to 138,104.34, 190,589.67 and 77,677.80

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Solution

The fourth proportional to 138,104.34, 190,589.67 and 77,677.80 is: 107,198.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,104.34 : 190,589.67 = 77,677.80 : x
  2. Step 2: Convert to fraction form
    138,104.34/190,589.67 = 77,677.80/x
  3. Step 3: Cross multiply
    138,104.34x = 190,589.67 × 77,677.80
  4. Step 4: Simplify right side
    138,104.34x = 14,804,586,268.33
  5. Step 5: Solve for x
    x = 14,804,586,268.33/138,104.34
  6. Step 6: Final answer
    x = 107,198.56

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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.