Home / 154,247.82-212,813.55-86,255.61

Finding the Fourth Proportional to 154,247.82, 212,813.55 and 86,255.61

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Solution

The fourth proportional to 154,247.82, 212,813.55 and 86,255.61 is: 119,005.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,247.82 : 212,813.55 = 86,255.61 : x
  2. Step 2: Convert to fraction form
    154,247.82/212,813.55 = 86,255.61/x
  3. Step 3: Cross multiply
    154,247.82x = 212,813.55 × 86,255.61
  4. Step 4: Simplify right side
    154,247.82x = 18,356,362,571.52
  5. Step 5: Solve for x
    x = 18,356,362,571.52/154,247.82
  6. Step 6: Final answer
    x = 119,005.65

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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.