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Finding the Fourth Proportional to 143,998.48, 198,759.60 and 83,582.68

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Solution

The fourth proportional to 143,998.48, 198,759.60 and 83,582.68 is: 115,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,998.48 : 198,759.60 = 83,582.68 : x
  2. Step 2: Convert to fraction form
    143,998.48/198,759.60 = 83,582.68/x
  3. Step 3: Cross multiply
    143,998.48x = 198,759.60 × 83,582.68
  4. Step 4: Simplify right side
    143,998.48x = 16,612,860,043.73
  5. Step 5: Solve for x
    x = 16,612,860,043.73/143,998.48
  6. Step 6: Final answer
    x = 115,368.30

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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.