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Finding the Fourth Proportional to 187,397.67, 258,608.82 and 105,743.26

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Solution

The fourth proportional to 187,397.67, 258,608.82 and 105,743.26 is: 145,925.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,397.67 : 258,608.82 = 105,743.26 : x
  2. Step 2: Convert to fraction form
    187,397.67/258,608.82 = 105,743.26/x
  3. Step 3: Cross multiply
    187,397.67x = 258,608.82 × 105,743.26
  4. Step 4: Simplify right side
    187,397.67x = 27,346,138,956.68
  5. Step 5: Solve for x
    x = 27,346,138,956.68/187,397.67
  6. Step 6: Final answer
    x = 145,925.72

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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.