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Finding the Fourth Proportional to 139,071, 208,618.38 and 39,232.20

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Solution

The fourth proportional to 139,071, 208,618.38 and 39,232.20 is: 58,851.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,071 : 208,618.38 = 39,232.20 : x
  2. Step 2: Convert to fraction form
    139,071/208,618.38 = 39,232.20/x
  3. Step 3: Cross multiply
    139,071x = 208,618.38 × 39,232.20
  4. Step 4: Simplify right side
    139,071x = 8,184,558,007.84
  5. Step 5: Solve for x
    x = 8,184,558,007.84/139,071
  6. Step 6: Final answer
    x = 58,851.65

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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.