Home / 143,790.60-198,427.14-80,124.60

Finding the Fourth Proportional to 143,790.60, 198,427.14 and 80,124.60

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Solution

The fourth proportional to 143,790.60, 198,427.14 and 80,124.60 is: 110,569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,790.60 : 198,427.14 = 80,124.60 : x
  2. Step 2: Convert to fraction form
    143,790.60/198,427.14 = 80,124.60/x
  3. Step 3: Cross multiply
    143,790.60x = 198,427.14 × 80,124.60
  4. Step 4: Simplify right side
    143,790.60x = 15,898,895,221.64
  5. Step 5: Solve for x
    x = 15,898,895,221.64/143,790.60
  6. Step 6: Final answer
    x = 110,569.78

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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.