Home / 90,021.40-135,000.81-50,101.34

Finding the Fourth Proportional to 90,021.40, 135,000.81 and 50,101.34

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Solution

The fourth proportional to 90,021.40, 135,000.81 and 50,101.34 is: 75,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.40 : 135,000.81 = 50,101.34 : x
  2. Step 2: Convert to fraction form
    90,021.40/135,000.81 = 50,101.34/x
  3. Step 3: Cross multiply
    90,021.40x = 135,000.81 × 50,101.34
  4. Step 4: Simplify right side
    90,021.40x = 6,763,720,807.08
  5. Step 5: Solve for x
    x = 6,763,720,807.08/90,021.40
  6. Step 6: Final answer
    x = 75,134.59

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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.