Home / 185,800.39-256,405.89-100,917.43

Finding the Fourth Proportional to 185,800.39, 256,405.89 and 100,917.43

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Solution

The fourth proportional to 185,800.39, 256,405.89 and 100,917.43 is: 139,266.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,800.39 : 256,405.89 = 100,917.43 : x
  2. Step 2: Convert to fraction form
    185,800.39/256,405.89 = 100,917.43/x
  3. Step 3: Cross multiply
    185,800.39x = 256,405.89 × 100,917.43
  4. Step 4: Simplify right side
    185,800.39x = 25,875,823,455.66
  5. Step 5: Solve for x
    x = 25,875,823,455.66/185,800.39
  6. Step 6: Final answer
    x = 139,266.79

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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.