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Finding the Fourth Proportional to 134,410.64, 185,485.21 and 73,979.98

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Solution

The fourth proportional to 134,410.64, 185,485.21 and 73,979.98 is: 102,091.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,410.64 : 185,485.21 = 73,979.98 : x
  2. Step 2: Convert to fraction form
    134,410.64/185,485.21 = 73,979.98/x
  3. Step 3: Cross multiply
    134,410.64x = 185,485.21 × 73,979.98
  4. Step 4: Simplify right side
    134,410.64x = 13,722,192,126.10
  5. Step 5: Solve for x
    x = 13,722,192,126.10/134,410.64
  6. Step 6: Final answer
    x = 102,091.56

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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.