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Finding the Fourth Proportional to 133,313.40, 199,970.10 and 121,503.60

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Solution

The fourth proportional to 133,313.40, 199,970.10 and 121,503.60 is: 182,255.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,313.40 : 199,970.10 = 121,503.60 : x
  2. Step 2: Convert to fraction form
    133,313.40/199,970.10 = 121,503.60/x
  3. Step 3: Cross multiply
    133,313.40x = 199,970.10 × 121,503.60
  4. Step 4: Simplify right side
    133,313.40x = 24,297,087,042.36
  5. Step 5: Solve for x
    x = 24,297,087,042.36/133,313.40
  6. Step 6: Final answer
    x = 182,255.40

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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.