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Finding the Fourth Proportional to 139,511.68, 209,202 and 50,702.56

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Solution

The fourth proportional to 139,511.68, 209,202 and 50,702.56 is: 76,030.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,511.68 : 209,202 = 50,702.56 : x
  2. Step 2: Convert to fraction form
    139,511.68/209,202 = 50,702.56/x
  3. Step 3: Cross multiply
    139,511.68x = 209,202 × 50,702.56
  4. Step 4: Simplify right side
    139,511.68x = 10,607,076,957.12
  5. Step 5: Solve for x
    x = 10,607,076,957.12/139,511.68
  6. Step 6: Final answer
    x = 76,030.03

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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.