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Finding the Fourth Proportional to 172,949, 238,669.62 and 93,461

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Solution

The fourth proportional to 172,949, 238,669.62 and 93,461 is: 128,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,949 : 238,669.62 = 93,461 : x
  2. Step 2: Convert to fraction form
    172,949/238,669.62 = 93,461/x
  3. Step 3: Cross multiply
    172,949x = 238,669.62 × 93,461
  4. Step 4: Simplify right side
    172,949x = 22,306,301,354.82
  5. Step 5: Solve for x
    x = 22,306,301,354.82/172,949
  6. Step 6: Final answer
    x = 128,976.18

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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.