Home / 99,511.68-137,322.80-54,188.96

Finding the Fourth Proportional to 99,511.68, 137,322.80 and 54,188.96

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Solution

The fourth proportional to 99,511.68, 137,322.80 and 54,188.96 is: 74,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,511.68 : 137,322.80 = 54,188.96 : x
  2. Step 2: Convert to fraction form
    99,511.68/137,322.80 = 54,188.96/x
  3. Step 3: Cross multiply
    99,511.68x = 137,322.80 × 54,188.96
  4. Step 4: Simplify right side
    99,511.68x = 7,441,379,716.29
  5. Step 5: Solve for x
    x = 7,441,379,716.29/99,511.68
  6. Step 6: Final answer
    x = 74,778.96

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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.