Home / 127,921.58-191,947.07-85,256.12

Finding the Fourth Proportional to 127,921.58, 191,947.07 and 85,256.12

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Solution

The fourth proportional to 127,921.58, 191,947.07 and 85,256.12 is: 127,927.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,921.58 : 191,947.07 = 85,256.12 : x
  2. Step 2: Convert to fraction form
    127,921.58/191,947.07 = 85,256.12/x
  3. Step 3: Cross multiply
    127,921.58x = 191,947.07 × 85,256.12
  4. Step 4: Simplify right side
    127,921.58x = 16,364,661,047.55
  5. Step 5: Solve for x
    x = 16,364,661,047.55/127,921.58
  6. Step 6: Final answer
    x = 127,927.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.