Home / 135,695.45-187,282.14-75,285.55

Finding the Fourth Proportional to 135,695.45, 187,282.14 and 75,285.55

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Solution

The fourth proportional to 135,695.45, 187,282.14 and 75,285.55 is: 103,906.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,695.45 : 187,282.14 = 75,285.55 : x
  2. Step 2: Convert to fraction form
    135,695.45/187,282.14 = 75,285.55/x
  3. Step 3: Cross multiply
    135,695.45x = 187,282.14 × 75,285.55
  4. Step 4: Simplify right side
    135,695.45x = 14,099,638,446.87
  5. Step 5: Solve for x
    x = 14,099,638,446.87/135,695.45
  6. Step 6: Final answer
    x = 103,906.49

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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.