Home / 185,661.06-256,212.57-100,778.10

Finding the Fourth Proportional to 185,661.06, 256,212.57 and 100,778.10

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Solution

The fourth proportional to 185,661.06, 256,212.57 and 100,778.10 is: 139,073.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,661.06 : 256,212.57 = 100,778.10 : x
  2. Step 2: Convert to fraction form
    185,661.06/256,212.57 = 100,778.10/x
  3. Step 3: Cross multiply
    185,661.06x = 256,212.57 × 100,778.10
  4. Step 4: Simplify right side
    185,661.06x = 25,820,616,000.72
  5. Step 5: Solve for x
    x = 25,820,616,000.72/185,661.06
  6. Step 6: Final answer
    x = 139,073.94

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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.