Home / 125,118.48-172,656.72-71,408.52

Finding the Fourth Proportional to 125,118.48, 172,656.72 and 71,408.52

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Solution

The fourth proportional to 125,118.48, 172,656.72 and 71,408.52 is: 98,539.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,118.48 : 172,656.72 = 71,408.52 : x
  2. Step 2: Convert to fraction form
    125,118.48/172,656.72 = 71,408.52/x
  3. Step 3: Cross multiply
    125,118.48x = 172,656.72 × 71,408.52
  4. Step 4: Simplify right side
    125,118.48x = 12,329,160,843.25
  5. Step 5: Solve for x
    x = 12,329,160,843.25/125,118.48
  6. Step 6: Final answer
    x = 98,539.89

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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.