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Finding the Fourth Proportional to 144,958.80, 217,438.20 and 135,117.30

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Solution

The fourth proportional to 144,958.80, 217,438.20 and 135,117.30 is: 202,675.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,958.80 : 217,438.20 = 135,117.30 : x
  2. Step 2: Convert to fraction form
    144,958.80/217,438.20 = 135,117.30/x
  3. Step 3: Cross multiply
    144,958.80x = 217,438.20 × 135,117.30
  4. Step 4: Simplify right side
    144,958.80x = 29,379,662,500.86
  5. Step 5: Solve for x
    x = 29,379,662,500.86/144,958.80
  6. Step 6: Final answer
    x = 202,675.95

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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.