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Finding the Fourth Proportional to 178,978.48, 246,985.08 and 98,405.92

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Solution

The fourth proportional to 178,978.48, 246,985.08 and 98,405.92 is: 135,797.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,978.48 : 246,985.08 = 98,405.92 : x
  2. Step 2: Convert to fraction form
    178,978.48/246,985.08 = 98,405.92/x
  3. Step 3: Cross multiply
    178,978.48x = 246,985.08 × 98,405.92
  4. Step 4: Simplify right side
    178,978.48x = 24,304,794,023.67
  5. Step 5: Solve for x
    x = 24,304,794,023.67/178,978.48
  6. Step 6: Final answer
    x = 135,797.30

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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.