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Finding the Fourth Proportional to 101,098.78, 139,511.16 and 60,804.80

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Solution

The fourth proportional to 101,098.78, 139,511.16 and 60,804.80 is: 83,907.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,098.78 : 139,511.16 = 60,804.80 : x
  2. Step 2: Convert to fraction form
    101,098.78/139,511.16 = 60,804.80/x
  3. Step 3: Cross multiply
    101,098.78x = 139,511.16 × 60,804.80
  4. Step 4: Simplify right side
    101,098.78x = 8,482,948,181.57
  5. Step 5: Solve for x
    x = 8,482,948,181.57/101,098.78
  6. Step 6: Final answer
    x = 83,907.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.