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Finding the Fourth Proportional to 135,599.80, 203,418.90 and 42,095.80

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Solution

The fourth proportional to 135,599.80, 203,418.90 and 42,095.80 is: 63,149.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,599.80 : 203,418.90 = 42,095.80 : x
  2. Step 2: Convert to fraction form
    135,599.80/203,418.90 = 42,095.80/x
  3. Step 3: Cross multiply
    135,599.80x = 203,418.90 × 42,095.80
  4. Step 4: Simplify right side
    135,599.80x = 8,563,081,330.62
  5. Step 5: Solve for x
    x = 8,563,081,330.62/135,599.80
  6. Step 6: Final answer
    x = 63,149.66

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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.