Home / 127,371.28-189,945-111,649.12

Finding the Fourth Proportional to 127,371.28, 189,945 and 111,649.12

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Solution

The fourth proportional to 127,371.28, 189,945 and 111,649.12 is: 166,499.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,371.28 : 189,945 = 111,649.12 : x
  2. Step 2: Convert to fraction form
    127,371.28/189,945 = 111,649.12/x
  3. Step 3: Cross multiply
    127,371.28x = 189,945 × 111,649.12
  4. Step 4: Simplify right side
    127,371.28x = 21,207,192,098.40
  5. Step 5: Solve for x
    x = 21,207,192,098.40/127,371.28
  6. Step 6: Final answer
    x = 166,499.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.