Home / 185,288.50-255,698.13-100,405.56

Finding the Fourth Proportional to 185,288.50, 255,698.13 and 100,405.56

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Solution

The fourth proportional to 185,288.50, 255,698.13 and 100,405.56 is: 138,559.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,288.50 : 255,698.13 = 100,405.56 : x
  2. Step 2: Convert to fraction form
    185,288.50/255,698.13 = 100,405.56/x
  3. Step 3: Cross multiply
    185,288.50x = 255,698.13 × 100,405.56
  4. Step 4: Simplify right side
    185,288.50x = 25,673,513,933.60
  5. Step 5: Solve for x
    x = 25,673,513,933.60/185,288.50
  6. Step 6: Final answer
    x = 138,559.67

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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.