Home / 185,803.45-256,408.41-100,920.31

Finding the Fourth Proportional to 185,803.45, 256,408.41 and 100,920.31

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Solution

The fourth proportional to 185,803.45, 256,408.41 and 100,920.31 is: 139,269.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,803.45 : 256,408.41 = 100,920.31 : x
  2. Step 2: Convert to fraction form
    185,803.45/256,408.41 = 100,920.31/x
  3. Step 3: Cross multiply
    185,803.45x = 256,408.41 × 100,920.31
  4. Step 4: Simplify right side
    185,803.45x = 25,876,816,223.81
  5. Step 5: Solve for x
    x = 25,876,816,223.81/185,803.45
  6. Step 6: Final answer
    x = 139,269.84

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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.