Home / 135,870.85-187,502.14-75,441.61

Finding the Fourth Proportional to 135,870.85, 187,502.14 and 75,441.61

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Solution

The fourth proportional to 135,870.85, 187,502.14 and 75,441.61 is: 104,109.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,870.85 : 187,502.14 = 75,441.61 : x
  2. Step 2: Convert to fraction form
    135,870.85/187,502.14 = 75,441.61/x
  3. Step 3: Cross multiply
    135,870.85x = 187,502.14 × 75,441.61
  4. Step 4: Simplify right side
    135,870.85x = 14,145,463,320.05
  5. Step 5: Solve for x
    x = 14,145,463,320.05/135,870.85
  6. Step 6: Final answer
    x = 104,109.63

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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.