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Finding the Fourth Proportional to 111,481.68, 153,839.34 and 63,740.28

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Solution

The fourth proportional to 111,481.68, 153,839.34 and 63,740.28 is: 87,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,481.68 : 153,839.34 = 63,740.28 : x
  2. Step 2: Convert to fraction form
    111,481.68/153,839.34 = 63,740.28/x
  3. Step 3: Cross multiply
    111,481.68x = 153,839.34 × 63,740.28
  4. Step 4: Simplify right side
    111,481.68x = 9,805,762,606.62
  5. Step 5: Solve for x
    x = 9,805,762,606.62/111,481.68
  6. Step 6: Final answer
    x = 87,958.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.