Home / 135,970.39-187,578.77-90,604.11

Finding the Fourth Proportional to 135,970.39, 187,578.77 and 90,604.11

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Solution

The fourth proportional to 135,970.39, 187,578.77 and 90,604.11 is: 124,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,970.39 : 187,578.77 = 90,604.11 : x
  2. Step 2: Convert to fraction form
    135,970.39/187,578.77 = 90,604.11/x
  3. Step 3: Cross multiply
    135,970.39x = 187,578.77 × 90,604.11
  4. Step 4: Simplify right side
    135,970.39x = 16,995,408,270.79
  5. Step 5: Solve for x
    x = 16,995,408,270.79/135,970.39
  6. Step 6: Final answer
    x = 124,993.45

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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.