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Finding the Fourth Proportional to 172,202.72, 237,642 and 104,218.88

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Solution

The fourth proportional to 172,202.72, 237,642 and 104,218.88 is: 143,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,202.72 : 237,642 = 104,218.88 : x
  2. Step 2: Convert to fraction form
    172,202.72/237,642 = 104,218.88/x
  3. Step 3: Cross multiply
    172,202.72x = 237,642 × 104,218.88
  4. Step 4: Simplify right side
    172,202.72x = 24,766,783,080.96
  5. Step 5: Solve for x
    x = 24,766,783,080.96/172,202.72
  6. Step 6: Final answer
    x = 143,823.41

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1.5x scale

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.