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Finding the Fourth Proportional to 128,869.96, 193,241.69 and 52,954.74

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Solution

The fourth proportional to 128,869.96, 193,241.69 and 52,954.74 is: 79,406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,869.96 : 193,241.69 = 52,954.74 : x
  2. Step 2: Convert to fraction form
    128,869.96/193,241.69 = 52,954.74/x
  3. Step 3: Cross multiply
    128,869.96x = 193,241.69 × 52,954.74
  4. Step 4: Simplify right side
    128,869.96x = 10,233,064,308.15
  5. Step 5: Solve for x
    x = 10,233,064,308.15/128,869.96
  6. Step 6: Final answer
    x = 79,406.13

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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.