Home / 186,916.80-280,462.74-81,722.16

Finding the Fourth Proportional to 186,916.80, 280,462.74 and 81,722.16

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Solution

The fourth proportional to 186,916.80, 280,462.74 and 81,722.16 is: 122,621.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,916.80 : 280,462.74 = 81,722.16 : x
  2. Step 2: Convert to fraction form
    186,916.80/280,462.74 = 81,722.16/x
  3. Step 3: Cross multiply
    186,916.80x = 280,462.74 × 81,722.16
  4. Step 4: Simplify right side
    186,916.80x = 22,920,020,912.32
  5. Step 5: Solve for x
    x = 22,920,020,912.32/186,916.80
  6. Step 6: Final answer
    x = 122,621.51

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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.