Home / 135,970.49-187,578.90-90,604.21

Finding the Fourth Proportional to 135,970.49, 187,578.90 and 90,604.21

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Solution

The fourth proportional to 135,970.49, 187,578.90 and 90,604.21 is: 124,993.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,970.49 : 187,578.90 = 90,604.21 : x
  2. Step 2: Convert to fraction form
    135,970.49/187,578.90 = 90,604.21/x
  3. Step 3: Cross multiply
    135,970.49x = 187,578.90 × 90,604.21
  4. Step 4: Simplify right side
    135,970.49x = 16,995,437,578.22
  5. Step 5: Solve for x
    x = 16,995,437,578.22/135,970.49
  6. Step 6: Final answer
    x = 124,993.58

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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.