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Finding the Fourth Proportional to 128,993.16, 193,490.82 and 35,504.04

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Solution

The fourth proportional to 128,993.16, 193,490.82 and 35,504.04 is: 53,256.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,993.16 : 193,490.82 = 35,504.04 : x
  2. Step 2: Convert to fraction form
    128,993.16/193,490.82 = 35,504.04/x
  3. Step 3: Cross multiply
    128,993.16x = 193,490.82 × 35,504.04
  4. Step 4: Simplify right side
    128,993.16x = 6,869,705,812.91
  5. Step 5: Solve for x
    x = 6,869,705,812.91/128,993.16
  6. Step 6: Final answer
    x = 53,256.36

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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.