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Finding the Fourth Proportional to 135,620.68, 203,407.80 and 35,781.91

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Solution

The fourth proportional to 135,620.68, 203,407.80 and 35,781.91 is: 53,666.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,620.68 : 203,407.80 = 35,781.91 : x
  2. Step 2: Convert to fraction form
    135,620.68/203,407.80 = 35,781.91/x
  3. Step 3: Cross multiply
    135,620.68x = 203,407.80 × 35,781.91
  4. Step 4: Simplify right side
    135,620.68x = 7,278,319,592.90
  5. Step 5: Solve for x
    x = 7,278,319,592.90/135,620.68
  6. Step 6: Final answer
    x = 53,666.74

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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.