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Finding the Fourth Proportional to 172,664.31, 259,036.52 and 54,332.56

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Solution

The fourth proportional to 172,664.31, 259,036.52 and 54,332.56 is: 81,511.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,664.31 : 259,036.52 = 54,332.56 : x
  2. Step 2: Convert to fraction form
    172,664.31/259,036.52 = 54,332.56/x
  3. Step 3: Cross multiply
    172,664.31x = 259,036.52 × 54,332.56
  4. Step 4: Simplify right side
    172,664.31x = 14,074,117,265.09
  5. Step 5: Solve for x
    x = 14,074,117,265.09/172,664.31
  6. Step 6: Final answer
    x = 81,511.44

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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.