Home / 125,929.87-173,819.86-100,612.51

Finding the Fourth Proportional to 125,929.87, 173,819.86 and 100,612.51

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Solution

The fourth proportional to 125,929.87, 173,819.86 and 100,612.51 is: 138,874.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,929.87 : 173,819.86 = 100,612.51 : x
  2. Step 2: Convert to fraction form
    125,929.87/173,819.86 = 100,612.51/x
  3. Step 3: Cross multiply
    125,929.87x = 173,819.86 × 100,612.51
  4. Step 4: Simplify right side
    125,929.87x = 17,488,451,716.37
  5. Step 5: Solve for x
    x = 17,488,451,716.37/125,929.87
  6. Step 6: Final answer
    x = 138,874.53

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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.