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Finding the Fourth Proportional to 187,346.28, 258,542.28 and 106,781.28

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Solution

The fourth proportional to 187,346.28, 258,542.28 and 106,781.28 is: 147,360.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,346.28 : 258,542.28 = 106,781.28 : x
  2. Step 2: Convert to fraction form
    187,346.28/258,542.28 = 106,781.28/x
  3. Step 3: Cross multiply
    187,346.28x = 258,542.28 × 106,781.28
  4. Step 4: Simplify right side
    187,346.28x = 27,607,475,592.52
  5. Step 5: Solve for x
    x = 27,607,475,592.52/187,346.28
  6. Step 6: Final answer
    x = 147,360.68

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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.