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Finding the Fourth Proportional to 142,550.80, 213,877.40 and 137,430.80

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Solution

The fourth proportional to 142,550.80, 213,877.40 and 137,430.80 is: 206,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,550.80 : 213,877.40 = 137,430.80 : x
  2. Step 2: Convert to fraction form
    142,550.80/213,877.40 = 137,430.80/x
  3. Step 3: Cross multiply
    142,550.80x = 213,877.40 × 137,430.80
  4. Step 4: Simplify right side
    142,550.80x = 29,393,342,183.92
  5. Step 5: Solve for x
    x = 29,393,342,183.92/142,550.80
  6. Step 6: Final answer
    x = 206,195.56

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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.