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Finding the Fourth Proportional to 172,926.88, 238,639.09 and 93,438.88

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Solution

The fourth proportional to 172,926.88, 238,639.09 and 93,438.88 is: 128,945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,926.88 : 238,639.09 = 93,438.88 : x
  2. Step 2: Convert to fraction form
    172,926.88/238,639.09 = 93,438.88/x
  3. Step 3: Cross multiply
    172,926.88x = 238,639.09 × 93,438.88
  4. Step 4: Simplify right side
    172,926.88x = 22,298,169,293.82
  5. Step 5: Solve for x
    x = 22,298,169,293.82/172,926.88
  6. Step 6: Final answer
    x = 128,945.65

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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.