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Finding the Fourth Proportional to 129,632.60, 194,448.90 and 108,896.60

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Solution

The fourth proportional to 129,632.60, 194,448.90 and 108,896.60 is: 163,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,632.60 : 194,448.90 = 108,896.60 : x
  2. Step 2: Convert to fraction form
    129,632.60/194,448.90 = 108,896.60/x
  3. Step 3: Cross multiply
    129,632.60x = 194,448.90 × 108,896.60
  4. Step 4: Simplify right side
    129,632.60x = 21,174,824,083.74
  5. Step 5: Solve for x
    x = 21,174,824,083.74/129,632.60
  6. Step 6: Final answer
    x = 163,344.90

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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.