Home / 118,943.40-164,149.41-78,586.44

Finding the Fourth Proportional to 118,943.40, 164,149.41 and 78,586.44

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Solution

The fourth proportional to 118,943.40, 164,149.41 and 78,586.44 is: 108,454.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,943.40 : 164,149.41 = 78,586.44 : x
  2. Step 2: Convert to fraction form
    118,943.40/164,149.41 = 78,586.44/x
  3. Step 3: Cross multiply
    118,943.40x = 164,149.41 × 78,586.44
  4. Step 4: Simplify right side
    118,943.40x = 12,899,917,760.00
  5. Step 5: Solve for x
    x = 12,899,917,760.00/118,943.40
  6. Step 6: Final answer
    x = 108,454.25

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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.