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Finding the Fourth Proportional to 120,958.87, 180,532.07 and 118,963.40

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Solution

The fourth proportional to 120,958.87, 180,532.07 and 118,963.40 is: 177,553.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,958.87 : 180,532.07 = 118,963.40 : x
  2. Step 2: Convert to fraction form
    120,958.87/180,532.07 = 118,963.40/x
  3. Step 3: Cross multiply
    120,958.87x = 180,532.07 × 118,963.40
  4. Step 4: Simplify right side
    120,958.87x = 21,476,708,866.59
  5. Step 5: Solve for x
    x = 21,476,708,866.59/120,958.87
  6. Step 6: Final answer
    x = 177,553.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.