Home / 143,688.31-198,296.03-80,026.12

Finding the Fourth Proportional to 143,688.31, 198,296.03 and 80,026.12

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Solution

The fourth proportional to 143,688.31, 198,296.03 and 80,026.12 is: 110,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,688.31 : 198,296.03 = 80,026.12 : x
  2. Step 2: Convert to fraction form
    143,688.31/198,296.03 = 80,026.12/x
  3. Step 3: Cross multiply
    143,688.31x = 198,296.03 × 80,026.12
  4. Step 4: Simplify right side
    143,688.31x = 15,868,860,996.43
  5. Step 5: Solve for x
    x = 15,868,860,996.43/143,688.31
  6. Step 6: Final answer
    x = 110,439.47

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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.