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Finding the Fourth Proportional to 111,700.78, 154,159.23 and 63,969.82

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Solution

The fourth proportional to 111,700.78, 154,159.23 and 63,969.82 is: 88,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,700.78 : 154,159.23 = 63,969.82 : x
  2. Step 2: Convert to fraction form
    111,700.78/154,159.23 = 63,969.82/x
  3. Step 3: Cross multiply
    111,700.78x = 154,159.23 × 63,969.82
  4. Step 4: Simplify right side
    111,700.78x = 9,861,538,194.44
  5. Step 5: Solve for x
    x = 9,861,538,194.44/111,700.78
  6. Step 6: Final answer
    x = 88,285.31

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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.