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Finding the Fourth Proportional to 143,719.60, 198,329.16 and 80,053.60

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Solution

The fourth proportional to 143,719.60, 198,329.16 and 80,053.60 is: 110,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,719.60 : 198,329.16 = 80,053.60 : x
  2. Step 2: Convert to fraction form
    143,719.60/198,329.16 = 80,053.60/x
  3. Step 3: Cross multiply
    143,719.60x = 198,329.16 × 80,053.60
  4. Step 4: Simplify right side
    143,719.60x = 15,876,963,242.98
  5. Step 5: Solve for x
    x = 15,876,963,242.98/143,719.60
  6. Step 6: Final answer
    x = 110,471.80

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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.