Home / 99,840.77-137,780.94-54,519.08

Finding the Fourth Proportional to 99,840.77, 137,780.94 and 54,519.08

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Solution

The fourth proportional to 99,840.77, 137,780.94 and 54,519.08 is: 75,236.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,840.77 : 137,780.94 = 54,519.08 : x
  2. Step 2: Convert to fraction form
    99,840.77/137,780.94 = 54,519.08/x
  3. Step 3: Cross multiply
    99,840.77x = 137,780.94 × 54,519.08
  4. Step 4: Simplify right side
    99,840.77x = 7,511,690,090.34
  5. Step 5: Solve for x
    x = 7,511,690,090.34/99,840.77
  6. Step 6: Final answer
    x = 75,236.70

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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.