Home / 140,280.72-193,587.39-76,618.68

Finding the Fourth Proportional to 140,280.72, 193,587.39 and 76,618.68

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Solution

The fourth proportional to 140,280.72, 193,587.39 and 76,618.68 is: 105,733.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,280.72 : 193,587.39 = 76,618.68 : x
  2. Step 2: Convert to fraction form
    140,280.72/193,587.39 = 76,618.68/x
  3. Step 3: Cross multiply
    140,280.72x = 193,587.39 × 76,618.68
  4. Step 4: Simplify right side
    140,280.72x = 14,832,410,286.45
  5. Step 5: Solve for x
    x = 14,832,410,286.45/140,280.72
  6. Step 6: Final answer
    x = 105,733.78

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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.