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Finding the Fourth Proportional to 133,479.20, 200,218.80 and 121,426.40

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Solution

The fourth proportional to 133,479.20, 200,218.80 and 121,426.40 is: 182,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,479.20 : 200,218.80 = 121,426.40 : x
  2. Step 2: Convert to fraction form
    133,479.20/200,218.80 = 121,426.40/x
  3. Step 3: Cross multiply
    133,479.20x = 200,218.80 × 121,426.40
  4. Step 4: Simplify right side
    133,479.20x = 24,311,848,096.32
  5. Step 5: Solve for x
    x = 24,311,848,096.32/133,479.20
  6. Step 6: Final answer
    x = 182,139.60

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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.