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Finding the Fourth Proportional to 172,633.95, 258,682.32 and 65,959.70

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Solution

The fourth proportional to 172,633.95, 258,682.32 and 65,959.70 is: 98,836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,633.95 : 258,682.32 = 65,959.70 : x
  2. Step 2: Convert to fraction form
    172,633.95/258,682.32 = 65,959.70/x
  3. Step 3: Cross multiply
    172,633.95x = 258,682.32 × 65,959.70
  4. Step 4: Simplify right side
    172,633.95x = 17,062,606,929.09
  5. Step 5: Solve for x
    x = 17,062,606,929.09/172,633.95
  6. Step 6: Final answer
    x = 98,836.91

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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.