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Finding the Fourth Proportional to 187,640.88, 258,925.08 and 107,052.89

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Solution

The fourth proportional to 187,640.88, 258,925.08 and 107,052.89 is: 147,721.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,640.88 : 258,925.08 = 107,052.89 : x
  2. Step 2: Convert to fraction form
    187,640.88/258,925.08 = 107,052.89/x
  3. Step 3: Cross multiply
    187,640.88x = 258,925.08 × 107,052.89
  4. Step 4: Simplify right side
    187,640.88x = 27,718,678,369.67
  5. Step 5: Solve for x
    x = 27,718,678,369.67/187,640.88
  6. Step 6: Final answer
    x = 147,721.96

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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.