Home / 185,784.85-256,383-105,212.35

Finding the Fourth Proportional to 185,784.85, 256,383 and 105,212.35

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Solution

The fourth proportional to 185,784.85, 256,383 and 105,212.35 is: 145,192.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,784.85 : 256,383 = 105,212.35 : x
  2. Step 2: Convert to fraction form
    185,784.85/256,383 = 105,212.35/x
  3. Step 3: Cross multiply
    185,784.85x = 256,383 × 105,212.35
  4. Step 4: Simplify right side
    185,784.85x = 26,974,657,930.05
  5. Step 5: Solve for x
    x = 26,974,657,930.05/185,784.85
  6. Step 6: Final answer
    x = 145,192.99

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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.