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Finding the Fourth Proportional to 172,815.50, 238,485.40 and 93,327.50

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Solution

The fourth proportional to 172,815.50, 238,485.40 and 93,327.50 is: 128,791.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,815.50 : 238,485.40 = 93,327.50 : x
  2. Step 2: Convert to fraction form
    172,815.50/238,485.40 = 93,327.50/x
  3. Step 3: Cross multiply
    172,815.50x = 238,485.40 × 93,327.50
  4. Step 4: Simplify right side
    172,815.50x = 22,257,246,168.50
  5. Step 5: Solve for x
    x = 22,257,246,168.50/172,815.50
  6. Step 6: Final answer
    x = 128,791.96

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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.