Home / 143,784.75-198,427.01-80,126.66

Finding the Fourth Proportional to 143,784.75, 198,427.01 and 80,126.66

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Solution

The fourth proportional to 143,784.75, 198,427.01 and 80,126.66 is: 110,577.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,784.75 : 198,427.01 = 80,126.66 : x
  2. Step 2: Convert to fraction form
    143,784.75/198,427.01 = 80,126.66/x
  3. Step 3: Cross multiply
    143,784.75x = 198,427.01 × 80,126.66
  4. Step 4: Simplify right side
    143,784.75x = 15,899,292,172.32
  5. Step 5: Solve for x
    x = 15,899,292,172.32/143,784.75
  6. Step 6: Final answer
    x = 110,577.04

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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.