Home / 125,078.04-172,634.49-79,745.58

Finding the Fourth Proportional to 125,078.04, 172,634.49 and 79,745.58

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Solution

The fourth proportional to 125,078.04, 172,634.49 and 79,745.58 is: 110,065.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,078.04 : 172,634.49 = 79,745.58 : x
  2. Step 2: Convert to fraction form
    125,078.04/172,634.49 = 79,745.58/x
  3. Step 3: Cross multiply
    125,078.04x = 172,634.49 × 79,745.58
  4. Step 4: Simplify right side
    125,078.04x = 13,766,837,533.05
  5. Step 5: Solve for x
    x = 13,766,837,533.05/125,078.04
  6. Step 6: Final answer
    x = 110,065.98

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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.