Home / 143,012.88-198,261.97-135,429.46

Finding the Fourth Proportional to 143,012.88, 198,261.97 and 135,429.46

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Solution

The fourth proportional to 143,012.88, 198,261.97 and 135,429.46 is: 187,748.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,012.88 : 198,261.97 = 135,429.46 : x
  2. Step 2: Convert to fraction form
    143,012.88/198,261.97 = 135,429.46/x
  3. Step 3: Cross multiply
    143,012.88x = 198,261.97 × 135,429.46
  4. Step 4: Simplify right side
    143,012.88x = 26,850,510,701.41
  5. Step 5: Solve for x
    x = 26,850,510,701.41/143,012.88
  6. Step 6: Final answer
    x = 187,748.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.