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Finding the Fourth Proportional to 187,069.76, 257,959.68 and 123,326

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Solution

The fourth proportional to 187,069.76, 257,959.68 and 123,326 is: 170,060.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,069.76 : 257,959.68 = 123,326 : x
  2. Step 2: Convert to fraction form
    187,069.76/257,959.68 = 123,326/x
  3. Step 3: Cross multiply
    187,069.76x = 257,959.68 × 123,326
  4. Step 4: Simplify right side
    187,069.76x = 31,813,135,495.68
  5. Step 5: Solve for x
    x = 31,813,135,495.68/187,069.76
  6. Step 6: Final answer
    x = 170,060.28

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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.