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Finding the Fourth Proportional to 178,643.52, 246,566.88 and 122,189.76

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Solution

The fourth proportional to 178,643.52, 246,566.88 and 122,189.76 is: 168,648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,643.52 : 246,566.88 = 122,189.76 : x
  2. Step 2: Convert to fraction form
    178,643.52/246,566.88 = 122,189.76/x
  3. Step 3: Cross multiply
    178,643.52x = 246,566.88 × 122,189.76
  4. Step 4: Simplify right side
    178,643.52x = 30,127,947,891.15
  5. Step 5: Solve for x
    x = 30,127,947,891.15/178,643.52
  6. Step 6: Final answer
    x = 168,648.42

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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.