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Finding the Fourth Proportional to 178,987.30, 247,008.84 and 102,520.06

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Solution

The fourth proportional to 178,987.30, 247,008.84 and 102,520.06 is: 141,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,987.30 : 247,008.84 = 102,520.06 : x
  2. Step 2: Convert to fraction form
    178,987.30/247,008.84 = 102,520.06/x
  3. Step 3: Cross multiply
    178,987.30x = 247,008.84 × 102,520.06
  4. Step 4: Simplify right side
    178,987.30x = 25,323,361,097.33
  5. Step 5: Solve for x
    x = 25,323,361,097.33/178,987.30
  6. Step 6: Final answer
    x = 141,481.33

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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.