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Finding the Fourth Proportional to 128,991.16, 193,487.82 and 35,502.04

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Solution

The fourth proportional to 128,991.16, 193,487.82 and 35,502.04 is: 53,253.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,991.16 : 193,487.82 = 35,502.04 : x
  2. Step 2: Convert to fraction form
    128,991.16/193,487.82 = 35,502.04/x
  3. Step 3: Cross multiply
    128,991.16x = 193,487.82 × 35,502.04
  4. Step 4: Simplify right side
    128,991.16x = 6,869,212,325.15
  5. Step 5: Solve for x
    x = 6,869,212,325.15/128,991.16
  6. Step 6: Final answer
    x = 53,253.36

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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.