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Finding the Fourth Proportional to 96,659.70, 144,989.55 and 81,107.70

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Solution

The fourth proportional to 96,659.70, 144,989.55 and 81,107.70 is: 121,661.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,659.70 : 144,989.55 = 81,107.70 : x
  2. Step 2: Convert to fraction form
    96,659.70/144,989.55 = 81,107.70/x
  3. Step 3: Cross multiply
    96,659.70x = 144,989.55 × 81,107.70
  4. Step 4: Simplify right side
    96,659.70x = 11,759,768,924.54
  5. Step 5: Solve for x
    x = 11,759,768,924.54/96,659.70
  6. Step 6: Final answer
    x = 121,661.55

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1.5x scale

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.