Home / 99,955.12-137,933.40-54,635.44

Finding the Fourth Proportional to 99,955.12, 137,933.40 and 54,635.44

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Solution

The fourth proportional to 99,955.12, 137,933.40 and 54,635.44 is: 75,394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,955.12 : 137,933.40 = 54,635.44 : x
  2. Step 2: Convert to fraction form
    99,955.12/137,933.40 = 54,635.44/x
  3. Step 3: Cross multiply
    99,955.12x = 137,933.40 × 54,635.44
  4. Step 4: Simplify right side
    99,955.12x = 7,536,051,999.70
  5. Step 5: Solve for x
    x = 7,536,051,999.70/99,955.12
  6. Step 6: Final answer
    x = 75,394.36

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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.