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Finding the Fourth Proportional to 143,793.60, 215,722.80 and 84,598.80

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Solution

The fourth proportional to 143,793.60, 215,722.80 and 84,598.80 is: 126,917.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,793.60 : 215,722.80 = 84,598.80 : x
  2. Step 2: Convert to fraction form
    143,793.60/215,722.80 = 84,598.80/x
  3. Step 3: Cross multiply
    143,793.60x = 215,722.80 × 84,598.80
  4. Step 4: Simplify right side
    143,793.60x = 18,249,890,012.64
  5. Step 5: Solve for x
    x = 18,249,890,012.64/143,793.60
  6. Step 6: Final answer
    x = 126,917.26

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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.