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Finding the Fourth Proportional to 172,172.54, 237,626.30 and 143,446.64

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Solution

The fourth proportional to 172,172.54, 237,626.30 and 143,446.64 is: 197,979.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,172.54 : 237,626.30 = 143,446.64 : x
  2. Step 2: Convert to fraction form
    172,172.54/237,626.30 = 143,446.64/x
  3. Step 3: Cross multiply
    172,172.54x = 237,626.30 × 143,446.64
  4. Step 4: Simplify right side
    172,172.54x = 34,086,693,952.02
  5. Step 5: Solve for x
    x = 34,086,693,952.02/172,172.54
  6. Step 6: Final answer
    x = 197,979.86

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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.