Home / 99,511.26-137,323.56-54,189.80

Finding the Fourth Proportional to 99,511.26, 137,323.56 and 54,189.80

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Solution

The fourth proportional to 99,511.26, 137,323.56 and 54,189.80 is: 74,780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,511.26 : 137,323.56 = 54,189.80 : x
  2. Step 2: Convert to fraction form
    99,511.26/137,323.56 = 54,189.80/x
  3. Step 3: Cross multiply
    99,511.26x = 137,323.56 × 54,189.80
  4. Step 4: Simplify right side
    99,511.26x = 7,441,536,251.69
  5. Step 5: Solve for x
    x = 7,441,536,251.69/99,511.26
  6. Step 6: Final answer
    x = 74,780.85

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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.