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Finding the Fourth Proportional to 139,725.36, 209,583.20 and 44,955.36

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Solution

The fourth proportional to 139,725.36, 209,583.20 and 44,955.36 is: 67,431.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,725.36 : 209,583.20 = 44,955.36 : x
  2. Step 2: Convert to fraction form
    139,725.36/209,583.20 = 44,955.36/x
  3. Step 3: Cross multiply
    139,725.36x = 209,583.20 × 44,955.36
  4. Step 4: Simplify right side
    139,725.36x = 9,421,888,205.95
  5. Step 5: Solve for x
    x = 9,421,888,205.95/139,725.36
  6. Step 6: Final answer
    x = 67,431.48

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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.