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Finding the Fourth Proportional to 172,854.28, 238,737.53 and 115,393.56

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Solution

The fourth proportional to 172,854.28, 238,737.53 and 115,393.56 is: 159,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,854.28 : 238,737.53 = 115,393.56 : x
  2. Step 2: Convert to fraction form
    172,854.28/238,737.53 = 115,393.56/x
  3. Step 3: Cross multiply
    172,854.28x = 238,737.53 × 115,393.56
  4. Step 4: Simplify right side
    172,854.28x = 27,548,773,492.31
  5. Step 5: Solve for x
    x = 27,548,773,492.31/172,854.28
  6. Step 6: Final answer
    x = 159,375.71

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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.