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Finding the Fourth Proportional to 125,961, 188,751.06 and 75,985.56

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Solution

The fourth proportional to 125,961, 188,751.06 and 75,985.56 is: 113,863.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,961 : 188,751.06 = 75,985.56 : x
  2. Step 2: Convert to fraction form
    125,961/188,751.06 = 75,985.56/x
  3. Step 3: Cross multiply
    125,961x = 188,751.06 × 75,985.56
  4. Step 4: Simplify right side
    125,961x = 14,342,354,994.69
  5. Step 5: Solve for x
    x = 14,342,354,994.69/125,961
  6. Step 6: Final answer
    x = 113,863.46

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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.