Home / 186,895.70-280,408.35-81,790.10

Finding the Fourth Proportional to 186,895.70, 280,408.35 and 81,790.10

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Solution

The fourth proportional to 186,895.70, 280,408.35 and 81,790.10 is: 122,713.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,895.70 : 280,408.35 = 81,790.10 : x
  2. Step 2: Convert to fraction form
    186,895.70/280,408.35 = 81,790.10/x
  3. Step 3: Cross multiply
    186,895.70x = 280,408.35 × 81,790.10
  4. Step 4: Simplify right side
    186,895.70x = 22,934,626,987.34
  5. Step 5: Solve for x
    x = 22,934,626,987.34/186,895.70
  6. Step 6: Final answer
    x = 122,713.51

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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.