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Finding the Fourth Proportional to 139,230.93, 208,869.97 and 48,021.57

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Solution

The fourth proportional to 139,230.93, 208,869.97 and 48,021.57 is: 72,040.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,230.93 : 208,869.97 = 48,021.57 : x
  2. Step 2: Convert to fraction form
    139,230.93/208,869.97 = 48,021.57/x
  3. Step 3: Cross multiply
    139,230.93x = 208,869.97 × 48,021.57
  4. Step 4: Simplify right side
    139,230.93x = 10,030,263,421.29
  5. Step 5: Solve for x
    x = 10,030,263,421.29/139,230.93
  6. Step 6: Final answer
    x = 72,040.48

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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.