Home / 100,158.08-138,212.88-54,827.37

Finding the Fourth Proportional to 100,158.08, 138,212.88 and 54,827.37

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Solution

The fourth proportional to 100,158.08, 138,212.88 and 54,827.37 is: 75,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,158.08 : 138,212.88 = 54,827.37 : x
  2. Step 2: Convert to fraction form
    100,158.08/138,212.88 = 54,827.37/x
  3. Step 3: Cross multiply
    100,158.08x = 138,212.88 × 54,827.37
  4. Step 4: Simplify right side
    100,158.08x = 7,577,848,813.33
  5. Step 5: Solve for x
    x = 7,577,848,813.33/100,158.08
  6. Step 6: Final answer
    x = 75,658.89

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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.