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Finding the Fourth Proportional to 141,887.81, 195,797.35 and 81,454.49

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Solution

The fourth proportional to 141,887.81, 195,797.35 and 81,454.49 is: 112,402.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,887.81 : 195,797.35 = 81,454.49 : x
  2. Step 2: Convert to fraction form
    141,887.81/195,797.35 = 81,454.49/x
  3. Step 3: Cross multiply
    141,887.81x = 195,797.35 × 81,454.49
  4. Step 4: Simplify right side
    141,887.81x = 15,948,573,573.46
  5. Step 5: Solve for x
    x = 15,948,573,573.46/141,887.81
  6. Step 6: Final answer
    x = 112,402.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.