Home / 125,103.21-172,642.37-67,742.52

Finding the Fourth Proportional to 125,103.21, 172,642.37 and 67,742.52

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Solution

The fourth proportional to 125,103.21, 172,642.37 and 67,742.52 is: 93,484.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,103.21 : 172,642.37 = 67,742.52 : x
  2. Step 2: Convert to fraction form
    125,103.21/172,642.37 = 67,742.52/x
  3. Step 3: Cross multiply
    125,103.21x = 172,642.37 × 67,742.52
  4. Step 4: Simplify right side
    125,103.21x = 11,695,229,202.57
  5. Step 5: Solve for x
    x = 11,695,229,202.57/125,103.21
  6. Step 6: Final answer
    x = 93,484.65

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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.