Home / 133,421.45-200,131.07-54,480.31

Finding the Fourth Proportional to 133,421.45, 200,131.07 and 54,480.31

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Solution

The fourth proportional to 133,421.45, 200,131.07 and 54,480.31 is: 81,720.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,421.45 : 200,131.07 = 54,480.31 : x
  2. Step 2: Convert to fraction form
    133,421.45/200,131.07 = 54,480.31/x
  3. Step 3: Cross multiply
    133,421.45x = 200,131.07 × 54,480.31
  4. Step 4: Simplify right side
    133,421.45x = 10,903,201,961.50
  5. Step 5: Solve for x
    x = 10,903,201,961.50/133,421.45
  6. Step 6: Final answer
    x = 81,720.01

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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.