Home / 185,140.05-255,494.21-100,257.45

Finding the Fourth Proportional to 185,140.05, 255,494.21 and 100,257.45

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Solution

The fourth proportional to 185,140.05, 255,494.21 and 100,257.45 is: 138,355.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,140.05 : 255,494.21 = 100,257.45 : x
  2. Step 2: Convert to fraction form
    185,140.05/255,494.21 = 100,257.45/x
  3. Step 3: Cross multiply
    185,140.05x = 255,494.21 × 100,257.45
  4. Step 4: Simplify right side
    185,140.05x = 25,615,197,984.36
  5. Step 5: Solve for x
    x = 25,615,197,984.36/185,140.05
  6. Step 6: Final answer
    x = 138,355.79

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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.