Home / 185,661.81-256,213.58-100,778.94

Finding the Fourth Proportional to 185,661.81, 256,213.58 and 100,778.94

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Solution

The fourth proportional to 185,661.81, 256,213.58 and 100,778.94 is: 139,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,661.81 : 256,213.58 = 100,778.94 : x
  2. Step 2: Convert to fraction form
    185,661.81/256,213.58 = 100,778.94/x
  3. Step 3: Cross multiply
    185,661.81x = 256,213.58 × 100,778.94
  4. Step 4: Simplify right side
    185,661.81x = 25,820,932,502.11
  5. Step 5: Solve for x
    x = 25,820,932,502.11/185,661.81
  6. Step 6: Final answer
    x = 139,075.09

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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.