Home / 100,216.11-138,292.83-54,885.50

Finding the Fourth Proportional to 100,216.11, 138,292.83 and 54,885.50

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Solution

The fourth proportional to 100,216.11, 138,292.83 and 54,885.50 is: 75,739.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,216.11 : 138,292.83 = 54,885.50 : x
  2. Step 2: Convert to fraction form
    100,216.11/138,292.83 = 54,885.50/x
  3. Step 3: Cross multiply
    100,216.11x = 138,292.83 × 54,885.50
  4. Step 4: Simplify right side
    100,216.11x = 7,590,270,429.50
  5. Step 5: Solve for x
    x = 7,590,270,429.50/100,216.11
  6. Step 6: Final answer
    x = 75,739.02

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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.