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Finding the Fourth Proportional to 187,721.65, 259,054.55 and 101,678.69

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Solution

The fourth proportional to 187,721.65, 259,054.55 and 101,678.69 is: 140,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,721.65 : 259,054.55 = 101,678.69 : x
  2. Step 2: Convert to fraction form
    187,721.65/259,054.55 = 101,678.69/x
  3. Step 3: Cross multiply
    187,721.65x = 259,054.55 × 101,678.69
  4. Step 4: Simplify right side
    187,721.65x = 26,340,328,375.02
  5. Step 5: Solve for x
    x = 26,340,328,375.02/187,721.65
  6. Step 6: Final answer
    x = 140,315.88

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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.