Home / 155,628.70-214,764.78-87,645.40

Finding the Fourth Proportional to 155,628.70, 214,764.78 and 87,645.40

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Solution

The fourth proportional to 155,628.70, 214,764.78 and 87,645.40 is: 120,949.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,628.70 : 214,764.78 = 87,645.40 : x
  2. Step 2: Convert to fraction form
    155,628.70/214,764.78 = 87,645.40/x
  3. Step 3: Cross multiply
    155,628.70x = 214,764.78 × 87,645.40
  4. Step 4: Simplify right side
    155,628.70x = 18,823,145,049.01
  5. Step 5: Solve for x
    x = 18,823,145,049.01/155,628.70
  6. Step 6: Final answer
    x = 120,949.06

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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.