Home / 98,150.40-135,448.20-55,709.64

Finding the Fourth Proportional to 98,150.40, 135,448.20 and 55,709.64

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Solution

The fourth proportional to 98,150.40, 135,448.20 and 55,709.64 is: 76,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,150.40 : 135,448.20 = 55,709.64 : x
  2. Step 2: Convert to fraction form
    98,150.40/135,448.20 = 55,709.64/x
  3. Step 3: Cross multiply
    98,150.40x = 135,448.20 × 55,709.64
  4. Step 4: Simplify right side
    98,150.40x = 7,545,770,460.65
  5. Step 5: Solve for x
    x = 7,545,770,460.65/98,150.40
  6. Step 6: Final answer
    x = 76,879.67

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1.5x scale

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.