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Finding the Fourth Proportional to 111,634.42, 153,884.82 and 68,534.32

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Solution

The fourth proportional to 111,634.42, 153,884.82 and 68,534.32 is: 94,472.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,634.42 : 153,884.82 = 68,534.32 : x
  2. Step 2: Convert to fraction form
    111,634.42/153,884.82 = 68,534.32/x
  3. Step 3: Cross multiply
    111,634.42x = 153,884.82 × 68,534.32
  4. Step 4: Simplify right side
    111,634.42x = 10,546,391,497.02
  5. Step 5: Solve for x
    x = 10,546,391,497.02/111,634.42
  6. Step 6: Final answer
    x = 94,472.58

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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.