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Finding the Fourth Proportional to 172,486.38, 258,711.39 and 46,139.39

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Solution

The fourth proportional to 172,486.38, 258,711.39 and 46,139.39 is: 69,204.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,486.38 : 258,711.39 = 46,139.39 : x
  2. Step 2: Convert to fraction form
    172,486.38/258,711.39 = 46,139.39/x
  3. Step 3: Cross multiply
    172,486.38x = 258,711.39 × 46,139.39
  4. Step 4: Simplify right side
    172,486.38x = 11,936,784,427.10
  5. Step 5: Solve for x
    x = 11,936,784,427.10/172,486.38
  6. Step 6: Final answer
    x = 69,204.21

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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.