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Finding the Fourth Proportional to 172,299.90, 237,739.02 and 100,666.08

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Solution

The fourth proportional to 172,299.90, 237,739.02 and 100,666.08 is: 138,898.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,299.90 : 237,739.02 = 100,666.08 : x
  2. Step 2: Convert to fraction form
    172,299.90/237,739.02 = 100,666.08/x
  3. Step 3: Cross multiply
    172,299.90x = 237,739.02 × 100,666.08
  4. Step 4: Simplify right side
    172,299.90x = 23,932,255,206.44
  5. Step 5: Solve for x
    x = 23,932,255,206.44/172,299.90
  6. Step 6: Final answer
    x = 138,898.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.