Home / 99,977.12-137,968.68-54,655.64

Finding the Fourth Proportional to 99,977.12, 137,968.68 and 54,655.64

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Solution

The fourth proportional to 99,977.12, 137,968.68 and 54,655.64 is: 75,424.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,977.12 : 137,968.68 = 54,655.64 : x
  2. Step 2: Convert to fraction form
    99,977.12/137,968.68 = 54,655.64/x
  3. Step 3: Cross multiply
    99,977.12x = 137,968.68 × 54,655.64
  4. Step 4: Simplify right side
    99,977.12x = 7,540,766,505.36
  5. Step 5: Solve for x
    x = 7,540,766,505.36/99,977.12
  6. Step 6: Final answer
    x = 75,424.92

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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.