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Finding the Fourth Proportional to 133,550.40, 200,471.40 and 83,686.80

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Solution

The fourth proportional to 133,550.40, 200,471.40 and 83,686.80 is: 125,621.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,550.40 : 200,471.40 = 83,686.80 : x
  2. Step 2: Convert to fraction form
    133,550.40/200,471.40 = 83,686.80/x
  3. Step 3: Cross multiply
    133,550.40x = 200,471.40 × 83,686.80
  4. Step 4: Simplify right side
    133,550.40x = 16,776,809,957.52
  5. Step 5: Solve for x
    x = 16,776,809,957.52/133,550.40
  6. Step 6: Final answer
    x = 125,621.56

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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.