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Finding the Fourth Proportional to 172,009.56, 257,948.73 and 82,036.38

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Solution

The fourth proportional to 172,009.56, 257,948.73 and 82,036.38 is: 123,023.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,009.56 : 257,948.73 = 82,036.38 : x
  2. Step 2: Convert to fraction form
    172,009.56/257,948.73 = 82,036.38/x
  3. Step 3: Cross multiply
    172,009.56x = 257,948.73 × 82,036.38
  4. Step 4: Simplify right side
    172,009.56x = 21,161,180,034.80
  5. Step 5: Solve for x
    x = 21,161,180,034.80/172,009.56
  6. Step 6: Final answer
    x = 123,023.28

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1.5x scale

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.