Home / 99,839.77-137,779.56-54,518.08

Finding the Fourth Proportional to 99,839.77, 137,779.56 and 54,518.08

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Solution

The fourth proportional to 99,839.77, 137,779.56 and 54,518.08 is: 75,235.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,839.77 : 137,779.56 = 54,518.08 : x
  2. Step 2: Convert to fraction form
    99,839.77/137,779.56 = 54,518.08/x
  3. Step 3: Cross multiply
    99,839.77x = 137,779.56 × 54,518.08
  4. Step 4: Simplify right side
    99,839.77x = 7,511,477,074.44
  5. Step 5: Solve for x
    x = 7,511,477,074.44/99,839.77
  6. Step 6: Final answer
    x = 75,235.32

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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.