Home / 187,538.82-258,804.27-102,663.78

Finding the Fourth Proportional to 187,538.82, 258,804.27 and 102,663.78

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Solution

The fourth proportional to 187,538.82, 258,804.27 and 102,663.78 is: 141,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,538.82 : 258,804.27 = 102,663.78 : x
  2. Step 2: Convert to fraction form
    187,538.82/258,804.27 = 102,663.78/x
  3. Step 3: Cross multiply
    187,538.82x = 258,804.27 × 102,663.78
  4. Step 4: Simplify right side
    187,538.82x = 26,569,824,638.34
  5. Step 5: Solve for x
    x = 26,569,824,638.34/187,538.82
  6. Step 6: Final answer
    x = 141,676.40

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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.