Home / 127,840.12-191,692.64-56,731.86

Finding the Fourth Proportional to 127,840.12, 191,692.64 and 56,731.86

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Solution

The fourth proportional to 127,840.12, 191,692.64 and 56,731.86 is: 85,067.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,840.12 : 191,692.64 = 56,731.86 : x
  2. Step 2: Convert to fraction form
    127,840.12/191,692.64 = 56,731.86/x
  3. Step 3: Cross multiply
    127,840.12x = 191,692.64 × 56,731.86
  4. Step 4: Simplify right side
    127,840.12x = 10,875,080,015.51
  5. Step 5: Solve for x
    x = 10,875,080,015.51/127,840.12
  6. Step 6: Final answer
    x = 85,067.82

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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.