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Finding the Fourth Proportional to 118,789.30, 163,797.84 and 75,700.51

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Solution

The fourth proportional to 118,789.30, 163,797.84 and 75,700.51 is: 104,382.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,789.30 : 163,797.84 = 75,700.51 : x
  2. Step 2: Convert to fraction form
    118,789.30/163,797.84 = 75,700.51/x
  3. Step 3: Cross multiply
    118,789.30x = 163,797.84 × 75,700.51
  4. Step 4: Simplify right side
    118,789.30x = 12,399,580,024.90
  5. Step 5: Solve for x
    x = 12,399,580,024.90/118,789.30
  6. Step 6: Final answer
    x = 104,382.97

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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.