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Finding the Fourth Proportional to 143,151.60, 214,727.40 and 84,102.60

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Solution

The fourth proportional to 143,151.60, 214,727.40 and 84,102.60 is: 126,153.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,151.60 : 214,727.40 = 84,102.60 : x
  2. Step 2: Convert to fraction form
    143,151.60/214,727.40 = 84,102.60/x
  3. Step 3: Cross multiply
    143,151.60x = 214,727.40 × 84,102.60
  4. Step 4: Simplify right side
    143,151.60x = 18,059,132,631.24
  5. Step 5: Solve for x
    x = 18,059,132,631.24/143,151.60
  6. Step 6: Final answer
    x = 126,153.90

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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.