Home / 186,038.40-279,057.60-111,388.80

Finding the Fourth Proportional to 186,038.40, 279,057.60 and 111,388.80

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Solution

The fourth proportional to 186,038.40, 279,057.60 and 111,388.80 is: 167,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,038.40 : 279,057.60 = 111,388.80 : x
  2. Step 2: Convert to fraction form
    186,038.40/279,057.60 = 111,388.80/x
  3. Step 3: Cross multiply
    186,038.40x = 279,057.60 × 111,388.80
  4. Step 4: Simplify right side
    186,038.40x = 31,083,891,194.88
  5. Step 5: Solve for x
    x = 31,083,891,194.88/186,038.40
  6. Step 6: Final answer
    x = 167,083.20

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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.