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Finding the Fourth Proportional to 191,910.40, 287,622.60 and 73,423.60

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Solution

The fourth proportional to 191,910.40, 287,622.60 and 73,423.60 is: 110,042.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,910.40 : 287,622.60 = 73,423.60 : x
  2. Step 2: Convert to fraction form
    191,910.40/287,622.60 = 73,423.60/x
  3. Step 3: Cross multiply
    191,910.40x = 287,622.60 × 73,423.60
  4. Step 4: Simplify right side
    191,910.40x = 21,118,286,733.36
  5. Step 5: Solve for x
    x = 21,118,286,733.36/191,910.40
  6. Step 6: Final answer
    x = 110,042.43

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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.