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Finding the Fourth Proportional to 143,608, 198,183.60 and 89,875.84

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Solution

The fourth proportional to 143,608, 198,183.60 and 89,875.84 is: 124,031.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,608 : 198,183.60 = 89,875.84 : x
  2. Step 2: Convert to fraction form
    143,608/198,183.60 = 89,875.84/x
  3. Step 3: Cross multiply
    143,608x = 198,183.60 × 89,875.84
  4. Step 4: Simplify right side
    143,608x = 17,811,917,524.22
  5. Step 5: Solve for x
    x = 17,811,917,524.22/143,608
  6. Step 6: Final answer
    x = 124,031.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.