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Finding the Fourth Proportional to 139,504.12, 209,227.02 and 45,988.12

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Solution

The fourth proportional to 139,504.12, 209,227.02 and 45,988.12 is: 68,972.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,504.12 : 209,227.02 = 45,988.12 : x
  2. Step 2: Convert to fraction form
    139,504.12/209,227.02 = 45,988.12/x
  3. Step 3: Cross multiply
    139,504.12x = 209,227.02 × 45,988.12
  4. Step 4: Simplify right side
    139,504.12x = 9,621,957,303.00
  5. Step 5: Solve for x
    x = 9,621,957,303.00/139,504.12
  6. Step 6: Final answer
    x = 68,972.57

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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.