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Finding the Fourth Proportional to 114,575.80, 172,017.60 and 67,239.40

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Solution

The fourth proportional to 114,575.80, 172,017.60 and 67,239.40 is: 100,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,575.80 : 172,017.60 = 67,239.40 : x
  2. Step 2: Convert to fraction form
    114,575.80/172,017.60 = 67,239.40/x
  3. Step 3: Cross multiply
    114,575.80x = 172,017.60 × 67,239.40
  4. Step 4: Simplify right side
    114,575.80x = 11,566,360,213.44
  5. Step 5: Solve for x
    x = 11,566,360,213.44/114,575.80
  6. Step 6: Final answer
    x = 100,949.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.