Home / 143,769.60-198,402.83-83,376.05

Finding the Fourth Proportional to 143,769.60, 198,402.83 and 83,376.05

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Solution

The fourth proportional to 143,769.60, 198,402.83 and 83,376.05 is: 115,059.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,769.60 : 198,402.83 = 83,376.05 : x
  2. Step 2: Convert to fraction form
    143,769.60/198,402.83 = 83,376.05/x
  3. Step 3: Cross multiply
    143,769.60x = 198,402.83 × 83,376.05
  4. Step 4: Simplify right side
    143,769.60x = 16,542,043,830.32
  5. Step 5: Solve for x
    x = 16,542,043,830.32/143,769.60
  6. Step 6: Final answer
    x = 115,059.40

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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.