Home / 100,243.87-138,336.45-54,924.68

Finding the Fourth Proportional to 100,243.87, 138,336.45 and 54,924.68

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Solution

The fourth proportional to 100,243.87, 138,336.45 and 54,924.68 is: 75,796.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,243.87 : 138,336.45 = 54,924.68 : x
  2. Step 2: Convert to fraction form
    100,243.87/138,336.45 = 54,924.68/x
  3. Step 3: Cross multiply
    100,243.87x = 138,336.45 × 54,924.68
  4. Step 4: Simplify right side
    100,243.87x = 7,598,085,248.59
  5. Step 5: Solve for x
    x = 7,598,085,248.59/100,243.87
  6. Step 6: Final answer
    x = 75,796.01

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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.