Home / 143,731.08-198,372.51-80,089.38

Finding the Fourth Proportional to 143,731.08, 198,372.51 and 80,089.38

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Solution

The fourth proportional to 143,731.08, 198,372.51 and 80,089.38 is: 110,536.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,731.08 : 198,372.51 = 80,089.38 : x
  2. Step 2: Convert to fraction form
    143,731.08/198,372.51 = 80,089.38/x
  3. Step 3: Cross multiply
    143,731.08x = 198,372.51 × 80,089.38
  4. Step 4: Simplify right side
    143,731.08x = 15,887,531,334.94
  5. Step 5: Solve for x
    x = 15,887,531,334.94/143,731.08
  6. Step 6: Final answer
    x = 110,536.51

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1.5x scale

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.