Home / 135,945.45-187,672.95-84,986.55

Finding the Fourth Proportional to 135,945.45, 187,672.95 and 84,986.55

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Solution

The fourth proportional to 135,945.45, 187,672.95 and 84,986.55 is: 117,324.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,945.45 : 187,672.95 = 84,986.55 : x
  2. Step 2: Convert to fraction form
    135,945.45/187,672.95 = 84,986.55/x
  3. Step 3: Cross multiply
    135,945.45x = 187,672.95 × 84,986.55
  4. Step 4: Simplify right side
    135,945.45x = 15,949,676,548.82
  5. Step 5: Solve for x
    x = 15,949,676,548.82/135,945.45
  6. Step 6: Final answer
    x = 117,324.09

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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.