Home / 125,456.23-172,890.94-123,150.65

Finding the Fourth Proportional to 125,456.23, 172,890.94 and 123,150.65

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Solution

The fourth proportional to 125,456.23, 172,890.94 and 123,150.65 is: 169,713.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,456.23 : 172,890.94 = 123,150.65 : x
  2. Step 2: Convert to fraction form
    125,456.23/172,890.94 = 123,150.65/x
  3. Step 3: Cross multiply
    125,456.23x = 172,890.94 × 123,150.65
  4. Step 4: Simplify right side
    125,456.23x = 21,291,631,024.36
  5. Step 5: Solve for x
    x = 21,291,631,024.36/125,456.23
  6. Step 6: Final answer
    x = 169,713.63

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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.