Home / 112,366.44-154,981.62-78,376.68

Finding the Fourth Proportional to 112,366.44, 154,981.62 and 78,376.68

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Solution

The fourth proportional to 112,366.44, 154,981.62 and 78,376.68 is: 108,101.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,366.44 : 154,981.62 = 78,376.68 : x
  2. Step 2: Convert to fraction form
    112,366.44/154,981.62 = 78,376.68/x
  3. Step 3: Cross multiply
    112,366.44x = 154,981.62 × 78,376.68
  4. Step 4: Simplify right side
    112,366.44x = 12,146,944,836.62
  5. Step 5: Solve for x
    x = 12,146,944,836.62/112,366.44
  6. Step 6: Final answer
    x = 108,101.18

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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.