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Finding the Fourth Proportional to 178,978.98, 246,985.77 and 98,406.42

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Solution

The fourth proportional to 178,978.98, 246,985.77 and 98,406.42 is: 135,797.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,978.98 : 246,985.77 = 98,406.42 : x
  2. Step 2: Convert to fraction form
    178,978.98/246,985.77 = 98,406.42/x
  3. Step 3: Cross multiply
    178,978.98x = 246,985.77 × 98,406.42
  4. Step 4: Simplify right side
    178,978.98x = 24,304,985,416.64
  5. Step 5: Solve for x
    x = 24,304,985,416.64/178,978.98
  6. Step 6: Final answer
    x = 135,797.99

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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.