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Finding the Fourth Proportional to 199,659.40, 275,489.84 and 127,091.50

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Solution

The fourth proportional to 199,659.40, 275,489.84 and 127,091.50 is: 175,360.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,659.40 : 275,489.84 = 127,091.50 : x
  2. Step 2: Convert to fraction form
    199,659.40/275,489.84 = 127,091.50/x
  3. Step 3: Cross multiply
    199,659.40x = 275,489.84 × 127,091.50
  4. Step 4: Simplify right side
    199,659.40x = 35,012,416,629.36
  5. Step 5: Solve for x
    x = 35,012,416,629.36/199,659.40
  6. Step 6: Final answer
    x = 175,360.72

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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.