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Finding the Fourth Proportional to 133,615.20, 200,422.80 and 121,562.40

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Solution

The fourth proportional to 133,615.20, 200,422.80 and 121,562.40 is: 182,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,615.20 : 200,422.80 = 121,562.40 : x
  2. Step 2: Convert to fraction form
    133,615.20/200,422.80 = 121,562.40/x
  3. Step 3: Cross multiply
    133,615.20x = 200,422.80 × 121,562.40
  4. Step 4: Simplify right side
    133,615.20x = 24,363,876,582.72
  5. Step 5: Solve for x
    x = 24,363,876,582.72/133,615.20
  6. Step 6: Final answer
    x = 182,343.60

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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.