Home / 135,782.12-203,607.33-79,640.57

Finding the Fourth Proportional to 135,782.12, 203,607.33 and 79,640.57

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Solution

The fourth proportional to 135,782.12, 203,607.33 and 79,640.57 is: 119,422.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,782.12 : 203,607.33 = 79,640.57 : x
  2. Step 2: Convert to fraction form
    135,782.12/203,607.33 = 79,640.57/x
  3. Step 3: Cross multiply
    135,782.12x = 203,607.33 × 79,640.57
  4. Step 4: Simplify right side
    135,782.12x = 16,215,402,799.34
  5. Step 5: Solve for x
    x = 16,215,402,799.34/135,782.12
  6. Step 6: Final answer
    x = 119,422.23

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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.