Home / 90,187.13-135,242.22-31,028.78

Finding the Fourth Proportional to 90,187.13, 135,242.22 and 31,028.78

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Solution

The fourth proportional to 90,187.13, 135,242.22 and 31,028.78 is: 46,529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,187.13 : 135,242.22 = 31,028.78 : x
  2. Step 2: Convert to fraction form
    90,187.13/135,242.22 = 31,028.78/x
  3. Step 3: Cross multiply
    90,187.13x = 135,242.22 × 31,028.78
  4. Step 4: Simplify right side
    90,187.13x = 4,196,401,091.09
  5. Step 5: Solve for x
    x = 4,196,401,091.09/90,187.13
  6. Step 6: Final answer
    x = 46,529.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.