Home / 99,811.58-137,742.07-54,491.48

Finding the Fourth Proportional to 99,811.58, 137,742.07 and 54,491.48

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Solution

The fourth proportional to 99,811.58, 137,742.07 and 54,491.48 is: 75,199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,811.58 : 137,742.07 = 54,491.48 : x
  2. Step 2: Convert to fraction form
    99,811.58/137,742.07 = 54,491.48/x
  3. Step 3: Cross multiply
    99,811.58x = 137,742.07 × 54,491.48
  4. Step 4: Simplify right side
    99,811.58x = 7,505,769,252.56
  5. Step 5: Solve for x
    x = 7,505,769,252.56/99,811.58
  6. Step 6: Final answer
    x = 75,199.38

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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.