Home / 90,131.81-135,000.68-45,682.25

Finding the Fourth Proportional to 90,131.81, 135,000.68 and 45,682.25

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Solution

The fourth proportional to 90,131.81, 135,000.68 and 45,682.25 is: 68,423.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,131.81 : 135,000.68 = 45,682.25 : x
  2. Step 2: Convert to fraction form
    90,131.81/135,000.68 = 45,682.25/x
  3. Step 3: Cross multiply
    90,131.81x = 135,000.68 × 45,682.25
  4. Step 4: Simplify right side
    90,131.81x = 6,167,133,910.52
  5. Step 5: Solve for x
    x = 6,167,133,910.52/90,131.81
  6. Step 6: Final answer
    x = 68,423.50

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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.