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Finding the Fourth Proportional to 112,641.60, 168,982.80 and 53,476.80

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Solution

The fourth proportional to 112,641.60, 168,982.80 and 53,476.80 is: 80,224.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,641.60 : 168,982.80 = 53,476.80 : x
  2. Step 2: Convert to fraction form
    112,641.60/168,982.80 = 53,476.80/x
  3. Step 3: Cross multiply
    112,641.60x = 168,982.80 × 53,476.80
  4. Step 4: Simplify right side
    112,641.60x = 9,036,659,399.04
  5. Step 5: Solve for x
    x = 9,036,659,399.04/112,641.60
  6. Step 6: Final answer
    x = 80,224.88

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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.