Home / 112,490.40-168,738.63-49,278

Finding the Fourth Proportional to 112,490.40, 168,738.63 and 49,278

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Solution

The fourth proportional to 112,490.40, 168,738.63 and 49,278 is: 73,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,490.40 : 168,738.63 = 49,278 : x
  2. Step 2: Convert to fraction form
    112,490.40/168,738.63 = 49,278/x
  3. Step 3: Cross multiply
    112,490.40x = 168,738.63 × 49,278
  4. Step 4: Simplify right side
    112,490.40x = 8,315,102,209.14
  5. Step 5: Solve for x
    x = 8,315,102,209.14/112,490.40
  6. Step 6: Final answer
    x = 73,918.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.