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Finding the Fourth Proportional to 125,840.40, 188,761.56 and 45,935.64

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Solution

The fourth proportional to 125,840.40, 188,761.56 and 45,935.64 is: 68,903.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,840.40 : 188,761.56 = 45,935.64 : x
  2. Step 2: Convert to fraction form
    125,840.40/188,761.56 = 45,935.64/x
  3. Step 3: Cross multiply
    125,840.40x = 188,761.56 × 45,935.64
  4. Step 4: Simplify right side
    125,840.40x = 8,670,883,066.00
  5. Step 5: Solve for x
    x = 8,670,883,066.00/125,840.40
  6. Step 6: Final answer
    x = 68,903.81

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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.