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Finding the Fourth Proportional to 187,420.52, 258,614.82 and 111,953

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Solution

The fourth proportional to 187,420.52, 258,614.82 and 111,953 is: 154,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,420.52 : 258,614.82 = 111,953 : x
  2. Step 2: Convert to fraction form
    187,420.52/258,614.82 = 111,953/x
  3. Step 3: Cross multiply
    187,420.52x = 258,614.82 × 111,953
  4. Step 4: Simplify right side
    187,420.52x = 28,952,704,943.46
  5. Step 5: Solve for x
    x = 28,952,704,943.46/187,420.52
  6. Step 6: Final answer
    x = 154,479.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.