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Finding the Fourth Proportional to 99,843.17, 137,779.95 and 54,520.34

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Solution

The fourth proportional to 99,843.17, 137,779.95 and 54,520.34 is: 75,236.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,843.17 : 137,779.95 = 54,520.34 : x
  2. Step 2: Convert to fraction form
    99,843.17/137,779.95 = 54,520.34/x
  3. Step 3: Cross multiply
    99,843.17x = 137,779.95 × 54,520.34
  4. Step 4: Simplify right side
    99,843.17x = 7,511,809,719.18
  5. Step 5: Solve for x
    x = 7,511,809,719.18/99,843.17
  6. Step 6: Final answer
    x = 75,236.09

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1.5x scale

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.