Home / 127,861.54-191,785.37-39,115.05

Finding the Fourth Proportional to 127,861.54, 191,785.37 and 39,115.05

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Solution

The fourth proportional to 127,861.54, 191,785.37 and 39,115.05 is: 58,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,861.54 : 191,785.37 = 39,115.05 : x
  2. Step 2: Convert to fraction form
    127,861.54/191,785.37 = 39,115.05/x
  3. Step 3: Cross multiply
    127,861.54x = 191,785.37 × 39,115.05
  4. Step 4: Simplify right side
    127,861.54x = 7,501,694,720.86
  5. Step 5: Solve for x
    x = 7,501,694,720.86/127,861.54
  6. Step 6: Final answer
    x = 58,670.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.