Home / 185,561.28-256,074.58-100,678.34

Finding the Fourth Proportional to 185,561.28, 256,074.58 and 100,678.34

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Solution

The fourth proportional to 185,561.28, 256,074.58 and 100,678.34 is: 138,936.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,561.28 : 256,074.58 = 100,678.34 : x
  2. Step 2: Convert to fraction form
    185,561.28/256,074.58 = 100,678.34/x
  3. Step 3: Cross multiply
    185,561.28x = 256,074.58 × 100,678.34
  4. Step 4: Simplify right side
    185,561.28x = 25,781,163,630.60
  5. Step 5: Solve for x
    x = 25,781,163,630.60/185,561.28
  6. Step 6: Final answer
    x = 138,936.12

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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.