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Finding the Fourth Proportional to 143,813.97, 198,463.46 and 86,453.92

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Solution

The fourth proportional to 143,813.97, 198,463.46 and 86,453.92 is: 119,306.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,813.97 : 198,463.46 = 86,453.92 : x
  2. Step 2: Convert to fraction form
    143,813.97/198,463.46 = 86,453.92/x
  3. Step 3: Cross multiply
    143,813.97x = 198,463.46 × 86,453.92
  4. Step 4: Simplify right side
    143,813.97x = 17,157,944,093.76
  5. Step 5: Solve for x
    x = 17,157,944,093.76/143,813.97
  6. Step 6: Final answer
    x = 119,306.52

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1.5x scale

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.