Home / 158,628.45-218,907.57-87,009.06

Finding the Fourth Proportional to 158,628.45, 218,907.57 and 87,009.06

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Solution

The fourth proportional to 158,628.45, 218,907.57 and 87,009.06 is: 120,072.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,628.45 : 218,907.57 = 87,009.06 : x
  2. Step 2: Convert to fraction form
    158,628.45/218,907.57 = 87,009.06/x
  3. Step 3: Cross multiply
    158,628.45x = 218,907.57 × 87,009.06
  4. Step 4: Simplify right side
    158,628.45x = 19,046,940,798.05
  5. Step 5: Solve for x
    x = 19,046,940,798.05/158,628.45
  6. Step 6: Final answer
    x = 120,072.67

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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.