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Finding the Fourth Proportional to 139,071.46, 208,627.08 and 43,016.08

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Solution

The fourth proportional to 139,071.46, 208,627.08 and 43,016.08 is: 64,530.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,071.46 : 208,627.08 = 43,016.08 : x
  2. Step 2: Convert to fraction form
    139,071.46/208,627.08 = 43,016.08/x
  3. Step 3: Cross multiply
    139,071.46x = 208,627.08 × 43,016.08
  4. Step 4: Simplify right side
    139,071.46x = 8,974,319,163.45
  5. Step 5: Solve for x
    x = 8,974,319,163.45/139,071.46
  6. Step 6: Final answer
    x = 64,530.27

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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.