Home / 186,916.58-280,378.80-66,981.34

Finding the Fourth Proportional to 186,916.58, 280,378.80 and 66,981.34

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Solution

The fourth proportional to 186,916.58, 280,378.80 and 66,981.34 is: 100,473.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,916.58 : 280,378.80 = 66,981.34 : x
  2. Step 2: Convert to fraction form
    186,916.58/280,378.80 = 66,981.34/x
  3. Step 3: Cross multiply
    186,916.58x = 280,378.80 × 66,981.34
  4. Step 4: Simplify right side
    186,916.58x = 18,780,147,731.59
  5. Step 5: Solve for x
    x = 18,780,147,731.59/186,916.58
  6. Step 6: Final answer
    x = 100,473.42

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1.5x scale

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.