Home / 151,986.11-209,734.29-83,999.57

Finding the Fourth Proportional to 151,986.11, 209,734.29 and 83,999.57

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Solution

The fourth proportional to 151,986.11, 209,734.29 and 83,999.57 is: 115,915.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,986.11 : 209,734.29 = 83,999.57 : x
  2. Step 2: Convert to fraction form
    151,986.11/209,734.29 = 83,999.57/x
  3. Step 3: Cross multiply
    151,986.11x = 209,734.29 × 83,999.57
  4. Step 4: Simplify right side
    151,986.11x = 17,617,589,125.58
  5. Step 5: Solve for x
    x = 17,617,589,125.58/151,986.11
  6. Step 6: Final answer
    x = 115,915.79

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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.