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Finding the Fourth Proportional to 187,418.52, 258,612.06 and 111,951

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Solution

The fourth proportional to 187,418.52, 258,612.06 and 111,951 is: 154,477.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,418.52 : 258,612.06 = 111,951 : x
  2. Step 2: Convert to fraction form
    187,418.52/258,612.06 = 111,951/x
  3. Step 3: Cross multiply
    187,418.52x = 258,612.06 × 111,951
  4. Step 4: Simplify right side
    187,418.52x = 28,951,878,729.06
  5. Step 5: Solve for x
    x = 28,951,878,729.06/187,418.52
  6. Step 6: Final answer
    x = 154,477.15

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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.