Home / 143,941.02-198,648.35-83,511.69

Finding the Fourth Proportional to 143,941.02, 198,648.35 and 83,511.69

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Solution

The fourth proportional to 143,941.02, 198,648.35 and 83,511.69 is: 115,251.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,941.02 : 198,648.35 = 83,511.69 : x
  2. Step 2: Convert to fraction form
    143,941.02/198,648.35 = 83,511.69/x
  3. Step 3: Cross multiply
    143,941.02x = 198,648.35 × 83,511.69
  4. Step 4: Simplify right side
    143,941.02x = 16,589,459,424.21
  5. Step 5: Solve for x
    x = 16,589,459,424.21/143,941.02
  6. Step 6: Final answer
    x = 115,251.78

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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.