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Finding the Fourth Proportional to 139,163.21, 208,583.45 and 64,125.73

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Solution

The fourth proportional to 139,163.21, 208,583.45 and 64,125.73 is: 96,114.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163.21 : 208,583.45 = 64,125.73 : x
  2. Step 2: Convert to fraction form
    139,163.21/208,583.45 = 64,125.73/x
  3. Step 3: Cross multiply
    139,163.21x = 208,583.45 × 64,125.73
  4. Step 4: Simplify right side
    139,163.21x = 13,375,565,365.17
  5. Step 5: Solve for x
    x = 13,375,565,365.17/139,163.21
  6. Step 6: Final answer
    x = 96,114.23

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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.