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Finding the Fourth Proportional to 113,309.40, 169,988.40 and 34,431.60

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Solution

The fourth proportional to 113,309.40, 169,988.40 and 34,431.60 is: 51,654.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,309.40 : 169,988.40 = 34,431.60 : x
  2. Step 2: Convert to fraction form
    113,309.40/169,988.40 = 34,431.60/x
  3. Step 3: Cross multiply
    113,309.40x = 169,988.40 × 34,431.60
  4. Step 4: Simplify right side
    113,309.40x = 5,852,972,593.44
  5. Step 5: Solve for x
    x = 5,852,972,593.44/113,309.40
  6. Step 6: Final answer
    x = 51,654.78

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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.