Home / 127,861.12-191,546.15-71,530.51

Finding the Fourth Proportional to 127,861.12, 191,546.15 and 71,530.51

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Solution

The fourth proportional to 127,861.12, 191,546.15 and 71,530.51 is: 107,158.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,861.12 : 191,546.15 = 71,530.51 : x
  2. Step 2: Convert to fraction form
    127,861.12/191,546.15 = 71,530.51/x
  3. Step 3: Cross multiply
    127,861.12x = 191,546.15 × 71,530.51
  4. Step 4: Simplify right side
    127,861.12x = 13,701,393,798.04
  5. Step 5: Solve for x
    x = 13,701,393,798.04/127,861.12
  6. Step 6: Final answer
    x = 107,158.41

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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.