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Finding the Fourth Proportional to 141,939.51, 212,483.90 and 136,892.54

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Solution

The fourth proportional to 141,939.51, 212,483.90 and 136,892.54 is: 204,928.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,939.51 : 212,483.90 = 136,892.54 : x
  2. Step 2: Convert to fraction form
    141,939.51/212,483.90 = 136,892.54/x
  3. Step 3: Cross multiply
    141,939.51x = 212,483.90 × 136,892.54
  4. Step 4: Simplify right side
    141,939.51x = 29,087,459,033.22
  5. Step 5: Solve for x
    x = 29,087,459,033.22/141,939.51
  6. Step 6: Final answer
    x = 204,928.56

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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.