Home / 135,971.39-187,580.15-90,605.11

Finding the Fourth Proportional to 135,971.39, 187,580.15 and 90,605.11

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Solution

The fourth proportional to 135,971.39, 187,580.15 and 90,605.11 is: 124,994.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,971.39 : 187,580.15 = 90,605.11 : x
  2. Step 2: Convert to fraction form
    135,971.39/187,580.15 = 90,605.11/x
  3. Step 3: Cross multiply
    135,971.39x = 187,580.15 × 90,605.11
  4. Step 4: Simplify right side
    135,971.39x = 16,995,720,124.57
  5. Step 5: Solve for x
    x = 16,995,720,124.57/135,971.39
  6. Step 6: Final answer
    x = 124,994.83

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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.