Home / 135,561.40-187,074.75-75,135.94

Finding the Fourth Proportional to 135,561.40, 187,074.75 and 75,135.94

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Solution

The fourth proportional to 135,561.40, 187,074.75 and 75,135.94 is: 103,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,561.40 : 187,074.75 = 75,135.94 : x
  2. Step 2: Convert to fraction form
    135,561.40/187,074.75 = 75,135.94/x
  3. Step 3: Cross multiply
    135,561.40x = 187,074.75 × 75,135.94
  4. Step 4: Simplify right side
    135,561.40x = 14,056,037,191.52
  5. Step 5: Solve for x
    x = 14,056,037,191.52/135,561.40
  6. Step 6: Final answer
    x = 103,687.61

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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.