Home / 135,986.45-187,509.96-92,972.91

Finding the Fourth Proportional to 135,986.45, 187,509.96 and 92,972.91

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Solution

The fourth proportional to 135,986.45, 187,509.96 and 92,972.91 is: 128,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,986.45 : 187,509.96 = 92,972.91 : x
  2. Step 2: Convert to fraction form
    135,986.45/187,509.96 = 92,972.91/x
  3. Step 3: Cross multiply
    135,986.45x = 187,509.96 × 92,972.91
  4. Step 4: Simplify right side
    135,986.45x = 17,433,346,989.70
  5. Step 5: Solve for x
    x = 17,433,346,989.70/135,986.45
  6. Step 6: Final answer
    x = 128,199.15

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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.