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Finding the Fourth Proportional to 172,592, 238,182.72 and 105,511.04

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Solution

The fourth proportional to 172,592, 238,182.72 and 105,511.04 is: 145,608.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,592 : 238,182.72 = 105,511.04 : x
  2. Step 2: Convert to fraction form
    172,592/238,182.72 = 105,511.04/x
  3. Step 3: Cross multiply
    172,592x = 238,182.72 × 105,511.04
  4. Step 4: Simplify right side
    172,592x = 25,130,906,497.23
  5. Step 5: Solve for x
    x = 25,130,906,497.23/172,592
  6. Step 6: Final answer
    x = 145,608.76

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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.