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Finding the Fourth Proportional to 144,043.60, 215,676.60 and 112,939.60

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Solution

The fourth proportional to 144,043.60, 215,676.60 and 112,939.60 is: 169,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,043.60 : 215,676.60 = 112,939.60 : x
  2. Step 2: Convert to fraction form
    144,043.60/215,676.60 = 112,939.60/x
  3. Step 3: Cross multiply
    144,043.60x = 215,676.60 × 112,939.60
  4. Step 4: Simplify right side
    144,043.60x = 24,358,428,933.36
  5. Step 5: Solve for x
    x = 24,358,428,933.36/144,043.60
  6. Step 6: Final answer
    x = 169,104.56

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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.