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Finding the Fourth Proportional to 172,142.88, 237,575.76 and 104,197.20

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Solution

The fourth proportional to 172,142.88, 237,575.76 and 104,197.20 is: 143,803.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,142.88 : 237,575.76 = 104,197.20 : x
  2. Step 2: Convert to fraction form
    172,142.88/237,575.76 = 104,197.20/x
  3. Step 3: Cross multiply
    172,142.88x = 237,575.76 × 104,197.20
  4. Step 4: Simplify right side
    172,142.88x = 24,754,728,979.87
  5. Step 5: Solve for x
    x = 24,754,728,979.87/172,142.88
  6. Step 6: Final answer
    x = 143,803.39

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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.