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Finding the Fourth Proportional to 187,601.13, 258,935.13 and 115,938

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Solution

The fourth proportional to 187,601.13, 258,935.13 and 115,938 is: 160,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,601.13 : 258,935.13 = 115,938 : x
  2. Step 2: Convert to fraction form
    187,601.13/258,935.13 = 115,938/x
  3. Step 3: Cross multiply
    187,601.13x = 258,935.13 × 115,938
  4. Step 4: Simplify right side
    187,601.13x = 30,020,421,101.94
  5. Step 5: Solve for x
    x = 30,020,421,101.94/187,601.13
  6. Step 6: Final answer
    x = 160,022.60

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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.