Home / 125,636.11-173,390.03-71,928.79

Finding the Fourth Proportional to 125,636.11, 173,390.03 and 71,928.79

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Solution

The fourth proportional to 125,636.11, 173,390.03 and 71,928.79 is: 99,268.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,636.11 : 173,390.03 = 71,928.79 : x
  2. Step 2: Convert to fraction form
    125,636.11/173,390.03 = 71,928.79/x
  3. Step 3: Cross multiply
    125,636.11x = 173,390.03 × 71,928.79
  4. Step 4: Simplify right side
    125,636.11x = 12,471,735,055.96
  5. Step 5: Solve for x
    x = 12,471,735,055.96/125,636.11
  6. Step 6: Final answer
    x = 99,268.71

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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.