Home / 186,896.20-280,409.10-81,790.60

Finding the Fourth Proportional to 186,896.20, 280,409.10 and 81,790.60

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Solution

The fourth proportional to 186,896.20, 280,409.10 and 81,790.60 is: 122,714.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,896.20 : 280,409.10 = 81,790.60 : x
  2. Step 2: Convert to fraction form
    186,896.20/280,409.10 = 81,790.60/x
  3. Step 3: Cross multiply
    186,896.20x = 280,409.10 × 81,790.60
  4. Step 4: Simplify right side
    186,896.20x = 22,934,828,534.46
  5. Step 5: Solve for x
    x = 22,934,828,534.46/186,896.20
  6. Step 6: Final answer
    x = 122,714.26

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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.