Home / 154,586.71-213,329.18-85,680.56

Finding the Fourth Proportional to 154,586.71, 213,329.18 and 85,680.56

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Solution

The fourth proportional to 154,586.71, 213,329.18 and 85,680.56 is: 118,238.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,586.71 : 213,329.18 = 85,680.56 : x
  2. Step 2: Convert to fraction form
    154,586.71/213,329.18 = 85,680.56/x
  3. Step 3: Cross multiply
    154,586.71x = 213,329.18 × 85,680.56
  4. Step 4: Simplify right side
    154,586.71x = 18,278,164,354.27
  5. Step 5: Solve for x
    x = 18,278,164,354.27/154,586.71
  6. Step 6: Final answer
    x = 118,238.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.