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Finding the Fourth Proportional to 125,793.78, 173,667.33 and 83,409.90

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Solution

The fourth proportional to 125,793.78, 173,667.33 and 83,409.90 is: 115,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,793.78 : 173,667.33 = 83,409.90 : x
  2. Step 2: Convert to fraction form
    125,793.78/173,667.33 = 83,409.90/x
  3. Step 3: Cross multiply
    125,793.78x = 173,667.33 × 83,409.90
  4. Step 4: Simplify right side
    125,793.78x = 14,485,574,628.57
  5. Step 5: Solve for x
    x = 14,485,574,628.57/125,793.78
  6. Step 6: Final answer
    x = 115,153.35

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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.