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Finding the Fourth Proportional to 101,181.90, 139,627.34 and 55,858.91

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Solution

The fourth proportional to 101,181.90, 139,627.34 and 55,858.91 is: 77,083.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,181.90 : 139,627.34 = 55,858.91 : x
  2. Step 2: Convert to fraction form
    101,181.90/139,627.34 = 55,858.91/x
  3. Step 3: Cross multiply
    101,181.90x = 139,627.34 × 55,858.91
  4. Step 4: Simplify right side
    101,181.90x = 7,799,430,041.17
  5. Step 5: Solve for x
    x = 7,799,430,041.17/101,181.90
  6. Step 6: Final answer
    x = 77,083.25

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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.