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Finding the Fourth Proportional to 118,018.56, 176,935.32 and 80,485.32

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Solution

The fourth proportional to 118,018.56, 176,935.32 and 80,485.32 is: 120,664.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,018.56 : 176,935.32 = 80,485.32 : x
  2. Step 2: Convert to fraction form
    118,018.56/176,935.32 = 80,485.32/x
  3. Step 3: Cross multiply
    118,018.56x = 176,935.32 × 80,485.32
  4. Step 4: Simplify right side
    118,018.56x = 14,240,695,849.50
  5. Step 5: Solve for x
    x = 14,240,695,849.50/118,018.56
  6. Step 6: Final answer
    x = 120,664.88

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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.