Home / 141,405.68-195,134.82-77,742.98

Finding the Fourth Proportional to 141,405.68, 195,134.82 and 77,742.98

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Solution

The fourth proportional to 141,405.68, 195,134.82 and 77,742.98 is: 107,282.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,405.68 : 195,134.82 = 77,742.98 : x
  2. Step 2: Convert to fraction form
    141,405.68/195,134.82 = 77,742.98/x
  3. Step 3: Cross multiply
    141,405.68x = 195,134.82 × 77,742.98
  4. Step 4: Simplify right side
    141,405.68x = 15,170,362,408.56
  5. Step 5: Solve for x
    x = 15,170,362,408.56/141,405.68
  6. Step 6: Final answer
    x = 107,282.55

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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.