Home / 135,890.68-203,836.02-42,403.72

Finding the Fourth Proportional to 135,890.68, 203,836.02 and 42,403.72

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Solution

The fourth proportional to 135,890.68, 203,836.02 and 42,403.72 is: 63,605.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,890.68 : 203,836.02 = 42,403.72 : x
  2. Step 2: Convert to fraction form
    135,890.68/203,836.02 = 42,403.72/x
  3. Step 3: Cross multiply
    135,890.68x = 203,836.02 × 42,403.72
  4. Step 4: Simplify right side
    135,890.68x = 8,643,405,517.99
  5. Step 5: Solve for x
    x = 8,643,405,517.99/135,890.68
  6. Step 6: Final answer
    x = 63,605.58

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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.