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Finding the Fourth Proportional to 192,402.60, 288,749.70 and 125,820.60

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Solution

The fourth proportional to 192,402.60, 288,749.70 and 125,820.60 is: 188,826.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,402.60 : 288,749.70 = 125,820.60 : x
  2. Step 2: Convert to fraction form
    192,402.60/288,749.70 = 125,820.60/x
  3. Step 3: Cross multiply
    192,402.60x = 288,749.70 × 125,820.60
  4. Step 4: Simplify right side
    192,402.60x = 36,330,660,503.82
  5. Step 5: Solve for x
    x = 36,330,660,503.82/192,402.60
  6. Step 6: Final answer
    x = 188,826.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.