Home / 138,940.08-191,596.80-123,578.12

Finding the Fourth Proportional to 138,940.08, 191,596.80 and 123,578.12

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Solution

The fourth proportional to 138,940.08, 191,596.80 and 123,578.12 is: 170,412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,940.08 : 191,596.80 = 123,578.12 : x
  2. Step 2: Convert to fraction form
    138,940.08/191,596.80 = 123,578.12/x
  3. Step 3: Cross multiply
    138,940.08x = 191,596.80 × 123,578.12
  4. Step 4: Simplify right side
    138,940.08x = 23,677,172,342.02
  5. Step 5: Solve for x
    x = 23,677,172,342.02/138,940.08
  6. Step 6: Final answer
    x = 170,412.83

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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.