Home / 99,974.80-137,965.50-54,653.32

Finding the Fourth Proportional to 99,974.80, 137,965.50 and 54,653.32

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Solution

The fourth proportional to 99,974.80, 137,965.50 and 54,653.32 is: 75,421.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,974.80 : 137,965.50 = 54,653.32 : x
  2. Step 2: Convert to fraction form
    99,974.80/137,965.50 = 54,653.32/x
  3. Step 3: Cross multiply
    99,974.80x = 137,965.50 × 54,653.32
  4. Step 4: Simplify right side
    99,974.80x = 7,540,272,347.19
  5. Step 5: Solve for x
    x = 7,540,272,347.19/99,974.80
  6. Step 6: Final answer
    x = 75,421.73

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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.