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Finding the Fourth Proportional to 112,522.80, 168,654.60 and 45,919.20

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Solution

The fourth proportional to 112,522.80, 168,654.60 and 45,919.20 is: 68,825.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,522.80 : 168,654.60 = 45,919.20 : x
  2. Step 2: Convert to fraction form
    112,522.80/168,654.60 = 45,919.20/x
  3. Step 3: Cross multiply
    112,522.80x = 168,654.60 × 45,919.20
  4. Step 4: Simplify right side
    112,522.80x = 7,744,484,308.32
  5. Step 5: Solve for x
    x = 7,744,484,308.32/112,522.80
  6. Step 6: Final answer
    x = 68,825.91

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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.