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Finding the Fourth Proportional to 172,427.75, 238,059.60 and 118,070.87

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Solution

The fourth proportional to 172,427.75, 238,059.60 and 118,070.87 is: 163,012.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,427.75 : 238,059.60 = 118,070.87 : x
  2. Step 2: Convert to fraction form
    172,427.75/238,059.60 = 118,070.87/x
  3. Step 3: Cross multiply
    172,427.75x = 238,059.60 × 118,070.87
  4. Step 4: Simplify right side
    172,427.75x = 28,107,904,083.85
  5. Step 5: Solve for x
    x = 28,107,904,083.85/172,427.75
  6. Step 6: Final answer
    x = 163,012.65

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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.