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Finding the Fourth Proportional to 121,809.63, 182,712.44 and 36,420.69

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Solution

The fourth proportional to 121,809.63, 182,712.44 and 36,420.69 is: 54,630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,809.63 : 182,712.44 = 36,420.69 : x
  2. Step 2: Convert to fraction form
    121,809.63/182,712.44 = 36,420.69/x
  3. Step 3: Cross multiply
    121,809.63x = 182,712.44 × 36,420.69
  4. Step 4: Simplify right side
    121,809.63x = 6,654,512,954.28
  5. Step 5: Solve for x
    x = 6,654,512,954.28/121,809.63
  6. Step 6: Final answer
    x = 54,630.43

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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.