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Finding the Fourth Proportional to 187,308.54, 258,486.93 and 102,425.94

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Solution

The fourth proportional to 187,308.54, 258,486.93 and 102,425.94 is: 141,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,308.54 : 258,486.93 = 102,425.94 : x
  2. Step 2: Convert to fraction form
    187,308.54/258,486.93 = 102,425.94/x
  3. Step 3: Cross multiply
    187,308.54x = 258,486.93 × 102,425.94
  4. Step 4: Simplify right side
    187,308.54x = 26,475,766,782.96
  5. Step 5: Solve for x
    x = 26,475,766,782.96/187,308.54
  6. Step 6: Final answer
    x = 141,348.42

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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.