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Finding the Fourth Proportional to 187,659.81, 258,960.90 and 102,760.47

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Solution

The fourth proportional to 187,659.81, 258,960.90 and 102,760.47 is: 141,804.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,659.81 : 258,960.90 = 102,760.47 : x
  2. Step 2: Convert to fraction form
    187,659.81/258,960.90 = 102,760.47/x
  3. Step 3: Cross multiply
    187,659.81x = 258,960.90 × 102,760.47
  4. Step 4: Simplify right side
    187,659.81x = 26,610,943,795.62
  5. Step 5: Solve for x
    x = 26,610,943,795.62/187,659.81
  6. Step 6: Final answer
    x = 141,804.17

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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.