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Finding the Fourth Proportional to 118,853.40, 164,060.46 and 81,100.92

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Solution

The fourth proportional to 118,853.40, 164,060.46 and 81,100.92 is: 111,948.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,853.40 : 164,060.46 = 81,100.92 : x
  2. Step 2: Convert to fraction form
    118,853.40/164,060.46 = 81,100.92/x
  3. Step 3: Cross multiply
    118,853.40x = 164,060.46 × 81,100.92
  4. Step 4: Simplify right side
    118,853.40x = 13,305,454,241.62
  5. Step 5: Solve for x
    x = 13,305,454,241.62/118,853.40
  6. Step 6: Final answer
    x = 111,948.45

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1.5x scale

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.