Home / 143,784.83-198,399.73-83,343.67

Finding the Fourth Proportional to 143,784.83, 198,399.73 and 83,343.67

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Solution

The fourth proportional to 143,784.83, 198,399.73 and 83,343.67 is: 115,000.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,784.83 : 198,399.73 = 83,343.67 : x
  2. Step 2: Convert to fraction form
    143,784.83/198,399.73 = 83,343.67/x
  3. Step 3: Cross multiply
    143,784.83x = 198,399.73 × 83,343.67
  4. Step 4: Simplify right side
    143,784.83x = 16,535,361,077.12
  5. Step 5: Solve for x
    x = 16,535,361,077.12/143,784.83
  6. Step 6: Final answer
    x = 115,000.73

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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.