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Finding the Fourth Proportional to 145,558.80, 200,862.72 and 81,893.88

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Solution

The fourth proportional to 145,558.80, 200,862.72 and 81,893.88 is: 113,008.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,558.80 : 200,862.72 = 81,893.88 : x
  2. Step 2: Convert to fraction form
    145,558.80/200,862.72 = 81,893.88/x
  3. Step 3: Cross multiply
    145,558.80x = 200,862.72 × 81,893.88
  4. Step 4: Simplify right side
    145,558.80x = 16,449,427,488.15
  5. Step 5: Solve for x
    x = 16,449,427,488.15/145,558.80
  6. Step 6: Final answer
    x = 113,008.81

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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.