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Finding the Fourth Proportional to 121,296.60, 181,944.90 and 113,423.40

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Solution

The fourth proportional to 121,296.60, 181,944.90 and 113,423.40 is: 170,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,296.60 : 181,944.90 = 113,423.40 : x
  2. Step 2: Convert to fraction form
    121,296.60/181,944.90 = 113,423.40/x
  3. Step 3: Cross multiply
    121,296.60x = 181,944.90 × 113,423.40
  4. Step 4: Simplify right side
    121,296.60x = 20,636,809,170.66
  5. Step 5: Solve for x
    x = 20,636,809,170.66/121,296.60
  6. Step 6: Final answer
    x = 170,135.10

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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.