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Finding the Fourth Proportional to 135,853.80, 203,780.70 and 83,292.90

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Solution

The fourth proportional to 135,853.80, 203,780.70 and 83,292.90 is: 124,939.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,853.80 : 203,780.70 = 83,292.90 : x
  2. Step 2: Convert to fraction form
    135,853.80/203,780.70 = 83,292.90/x
  3. Step 3: Cross multiply
    135,853.80x = 203,780.70 × 83,292.90
  4. Step 4: Simplify right side
    135,853.80x = 16,973,485,467.03
  5. Step 5: Solve for x
    x = 16,973,485,467.03/135,853.80
  6. Step 6: Final answer
    x = 124,939.35

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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.