Home / 135,639.71-187,185.03-75,212.90

Finding the Fourth Proportional to 135,639.71, 187,185.03 and 75,212.90

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Solution

The fourth proportional to 135,639.71, 187,185.03 and 75,212.90 is: 103,795.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,639.71 : 187,185.03 = 75,212.90 : x
  2. Step 2: Convert to fraction form
    135,639.71/187,185.03 = 75,212.90/x
  3. Step 3: Cross multiply
    135,639.71x = 187,185.03 × 75,212.90
  4. Step 4: Simplify right side
    135,639.71x = 14,078,728,006.96
  5. Step 5: Solve for x
    x = 14,078,728,006.96/135,639.71
  6. Step 6: Final answer
    x = 103,795.04

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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.