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Finding the Fourth Proportional to 125,608.01, 187,977.56 and 77,556.87

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Solution

The fourth proportional to 125,608.01, 187,977.56 and 77,556.87 is: 116,067.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,608.01 : 187,977.56 = 77,556.87 : x
  2. Step 2: Convert to fraction form
    125,608.01/187,977.56 = 77,556.87/x
  3. Step 3: Cross multiply
    125,608.01x = 187,977.56 × 77,556.87
  4. Step 4: Simplify right side
    125,608.01x = 14,578,950,796.05
  5. Step 5: Solve for x
    x = 14,578,950,796.05/125,608.01
  6. Step 6: Final answer
    x = 116,067.05

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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.