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Finding the Fourth Proportional to 191,631.03, 287,481.20 and 79,250.24

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Solution

The fourth proportional to 191,631.03, 287,481.20 and 79,250.24 is: 118,889.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,631.03 : 287,481.20 = 79,250.24 : x
  2. Step 2: Convert to fraction form
    191,631.03/287,481.20 = 79,250.24/x
  3. Step 3: Cross multiply
    191,631.03x = 287,481.20 × 79,250.24
  4. Step 4: Simplify right side
    191,631.03x = 22,782,952,261.83
  5. Step 5: Solve for x
    x = 22,782,952,261.83/191,631.03
  6. Step 6: Final answer
    x = 118,889.68

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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.