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Finding the Fourth Proportional to 132,749.60, 199,318.80 and 103,200.80

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Solution

The fourth proportional to 132,749.60, 199,318.80 and 103,200.80 is: 154,952.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,749.60 : 199,318.80 = 103,200.80 : x
  2. Step 2: Convert to fraction form
    132,749.60/199,318.80 = 103,200.80/x
  3. Step 3: Cross multiply
    132,749.60x = 199,318.80 × 103,200.80
  4. Step 4: Simplify right side
    132,749.60x = 20,569,859,615.04
  5. Step 5: Solve for x
    x = 20,569,859,615.04/132,749.60
  6. Step 6: Final answer
    x = 154,952.33

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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.