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Finding the Fourth Proportional to 191,576.48, 287,445.36 and 66,930.08

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Solution

The fourth proportional to 191,576.48, 287,445.36 and 66,930.08 is: 100,423.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,576.48 : 287,445.36 = 66,930.08 : x
  2. Step 2: Convert to fraction form
    191,576.48/287,445.36 = 66,930.08/x
  3. Step 3: Cross multiply
    191,576.48x = 287,445.36 × 66,930.08
  4. Step 4: Simplify right side
    191,576.48x = 19,238,740,940.43
  5. Step 5: Solve for x
    x = 19,238,740,940.43/191,576.48
  6. Step 6: Final answer
    x = 100,423.29

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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.