Home / 143,847.48-198,509.99-78,435.83

Finding the Fourth Proportional to 143,847.48, 198,509.99 and 78,435.83

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Solution

The fourth proportional to 143,847.48, 198,509.99 and 78,435.83 is: 108,241.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,847.48 : 198,509.99 = 78,435.83 : x
  2. Step 2: Convert to fraction form
    143,847.48/198,509.99 = 78,435.83/x
  3. Step 3: Cross multiply
    143,847.48x = 198,509.99 × 78,435.83
  4. Step 4: Simplify right side
    143,847.48x = 15,570,294,444.21
  5. Step 5: Solve for x
    x = 15,570,294,444.21/143,847.48
  6. Step 6: Final answer
    x = 108,241.69

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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.