Home / 99,591.36-137,435.40-54,879.36

Finding the Fourth Proportional to 99,591.36, 137,435.40 and 54,879.36

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Solution

The fourth proportional to 99,591.36, 137,435.40 and 54,879.36 is: 75,733.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,591.36 : 137,435.40 = 54,879.36 : x
  2. Step 2: Convert to fraction form
    99,591.36/137,435.40 = 54,879.36/x
  3. Step 3: Cross multiply
    99,591.36x = 137,435.40 × 54,879.36
  4. Step 4: Simplify right side
    99,591.36x = 7,542,366,793.34
  5. Step 5: Solve for x
    x = 7,542,366,793.34/99,591.36
  6. Step 6: Final answer
    x = 75,733.14

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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.