Home / 143,690.12-198,298.48-80,027.92

Finding the Fourth Proportional to 143,690.12, 198,298.48 and 80,027.92

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Solution

The fourth proportional to 143,690.12, 198,298.48 and 80,027.92 is: 110,441.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,690.12 : 198,298.48 = 80,027.92 : x
  2. Step 2: Convert to fraction form
    143,690.12/198,298.48 = 80,027.92/x
  3. Step 3: Cross multiply
    143,690.12x = 198,298.48 × 80,027.92
  4. Step 4: Simplify right side
    143,690.12x = 15,869,413,902.07
  5. Step 5: Solve for x
    x = 15,869,413,902.07/143,690.12
  6. Step 6: Final answer
    x = 110,441.93

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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.